Cats of all three colors are females. It’s true, and it makes sense. Generally speaking, the so-called three colors are black, red (Orange) and white. In fact, white belongs to the cat’s natural color, not the real color. Therefore, if the original color of white is removed, it should be two. In other words, the red and black cat must be a female cat.
Therefore, the black and white cat is actually a black cat, the red and white cat is a red cat, and the black and white red cat must be a female cat. In real life, all of them are female, and no exception has been found. No matter it is long hair or short hair, no matter what color of hair is more.
There is a basis for this fact. It comes from the genetic law of cats. The coat color gene only exists on sex chromosome X, and the color is only black and red. Male cat is XY, female cat is XX. In general, an X can carry only one color gene. Then XY male cat, at most two colors, and one of them must be white. Only XX’s female cat has the opportunity to carry two colors: black and red, plus white as the natural color, which makes up the three genders. By the way, all the orange hairs we see are defined as red, so the West has the name RED TABBY or red Persian.
In addition, some special species must also be female cats, such as tortoise shell cat (tortoise shell) and blue cream cat (blue cream). If you look at the colors of these two cats carefully, they can also be classified into three types. Of course, there are all kinds of things in the world. If a mutation occurs, it will produce XXY, which shows that it is a male cat with black and red fur. However, such a cat is definitely not fertile.
In fact, it is not entirely true. It can only be said that more than 99% of Sanhua cats are female cats.
The gene controlling the appearance of “three flowers” in cats is the sex linked gene, that is to say, the gene also controls the color of fur as well as gender. Therefore, only female cats have this kind of color. However, some male cats have chromosomal abnormalities, and this kind of flower color may also appear.
I found an article. It looks very deep. I don’t understand it personally.. I don’t know if you mean that..? I hope it can help you~~
The color of the cat
There are only two colors of cats, red and black. There is no other color. The faded color of red is milky. The fade color of black is blue.
Color in cats is inherited on the sex chromosome.
High school biology teacher taught a pair of chromosomes to control the sex of a person. The same is true for cats. The common XY is represented, and the female is represented by XX. Offspring take a letter from their parents. If you take y from your father and X from your mother (you can only take x from your mother), you will get XY, and the offspring will be male. If you get x from dad, the offspring is XX, that is female.
Because the cat’s color is on the sex chromosome, the cat’s sex chromosome has no color. That is to say, X can be colored. It can be red or black.
Let’s take an example: a pure red male cat matches a pure black female cat
The chromosome color of red male cat is x (red) y (black) and that of female cat is x (black) x (black)
… then if their kitten is male (male is XY): it means that the kitten must take a Y from his father, and Y is colorless. So kittens can’t inherit any of the colors of male cats. Because mom is black. So any x the kitten takes on her mother is black. In other words, it must be black. (there may be blue, brown, light brown, and key colors. We’ll discuss these issues later.)
… if they’re kittens, they’re females (XX): you should know. I will take an X on my father, that is, I will take my father’s red color, my mother will also take an X, and my mother’s black color will also be taken. So the kitten must be two-color.
For example, if a red male cat x (red) y (colorless) matches a red and black female cat x (red) x (black), then the same calculation can be made that the little male cat can take a color on his mother, X (red) or X (black), that is to say, the little male cat is pure black or pure red. The kitten must have a red on her father’s body and any color on her mother’s body. In other words, the kitten can be red black or pure red.
Take the red male cat and the red black female cat for example, and make a chart, which should be better understood
Therefore, the little male cat is impossible to get any color from his father, that is to say, the little male cat can only inherit the color of the female cat. Because the little male cat can only get one color from his mother, the male cat must be monochromatic (explained below for the two-color male cat). Kittens can get at most two colors, red and black, because they inherit one color from their parents. So the two-color cat must be a female cat.
According to the above rules, you can easily calculate any pure color.
… but blue and cream are on the solid color list. I personally think that blue and milk color are the result of the desalination gene on the autosomal, and have nothing to do with the color on the cat’s original sex chromosome. The CFA results are more easily understood if the two basic colors match black. Other colors only weaken the effect of gene and make black and red appear different degrees of desalination. For example, black cats will produce black, dark blue, light blue, and so on. In fact, they are all black, but the density of pigment distribution is different, resulting in different colors in vision.
CFA’s pure color table actually takes the color genes on the cat’s sex chromosomes and the desalination genes on the autosomal into account. However, there are not only desalination genes on autosomal chromosomes, but also other genes such as whole white, tiger spot, white spot, terminal color, gradients and so on. The function of desalination gene is the same as that of desalination gene, which adds different characteristics to the color inherited by cats.
For example, the color list says that black male and red male can produce black male and blue male. If blue is one of the possible types, there are also chances to produce chocolate focused kittens and brown male cats. Although such opportunities are rare, there are also fewer opportunities for blue male cats. Only if the black female cat is matched with a milky male cat, it will have a little more chance. So I think the results of the color list are not comprehensive.
All white: white once thought it was a cat’s color. It’s not. The pure white cat turned out to be colored. It’s just that another gene makes the cat’s original color invisible, so it looks like it’s all white. If the all white gene does not work, the kittens will be inherited according to the color of the big cat.
White spot: in our eyes, black and white, red and white, three flowers, all have a piece of white. In fact, it’s the same as all white. In my opinion, white is not the color of a cat. If you don’t count color, there are only two colors in Sanhua cat. So it’s right to say that there are no male cats for Maomao, blue milk and Sanhua. Because these colors have two different colors except white. Male cats can only have one color except white. So a two-color male cat must have a white color. The gene is not on the sex chromosome and has nothing to do with the cat’s original color and gender.
Blue, cream: blue is a faded color of black. Milk color is the fade color of red. In fact, it is also another gene effect, so that the color of the cat where the pigment density is reduced, there is a fade color. The gene is not on the sex chromosome and has nothing to do with the cat’s original color and gender.
Tiger spot: the same as above, a kind of tiger spot gene function, in the cat’s original color function, the appearance of tiger stripes. For example, the cat with brown tiger spots was originally black. Because of the action of tiger spot gene, it became brown tiger spot. The brown tiger spot looks yellow and black. In fact, the cat’s original color is only black due to the action of tiger spot gene (any tiger spot can only be counted as one color). If this brown tabby cat matches a pure black one. If there is no tiger spot gene in the kitten. Both male and female must be pure black cats. The gene is not on the sex chromosome and has nothing to do with the cat’s original color and gender.
Key color: same as above. A gene effect of albinism. But the most special thing about this gene is the way it whitens. It starts to work in the kitten’s belly and is affected by the temperature of the mother. The lower temperature parts of the kitten’s body show deep coloring, while the parts with higher body temperature show relatively shallow coloring. Because of the high temperature in the mother’s environment, the kittens are very light at birth. The color of the eye is also affected by this gene and is always blue. Therefore, some Hippo horses are almost completely white, and some can vaguely see that the original color and pattern are determined by the temperature of the mother. Key colors look very special. But if it’s not with a cat in a key color. The kittens born will be inherited according to the original color of the key color. The gene is not on the sex chromosome and has nothing to do with the cat’s original color and gender.
Gradient: no more explanation, same as tiger spot gene. The gene is not on the sex chromosome and has nothing to do with the cat’s original color and gender. To sum up. There are only two colors of red and black. All the original colors of cats are red, black or red black. The reason why we see cats that are so diverse is because other genes that control color work together. But none of these genes are on the sex chromosome and cannot change any of the original colors of cats.
The color of a kitten can only be inherited by its parents. It is impossible to skip the color inherited by the parents for the next generation
Male cats can’t inherit their father’s color. A female cat must inherit a color from her parents. Ignore white. The male must be monochromatic. The female must be monochrome or bicolor.
Inheritance of coat color in cats II (genes controlling coat color on autosomal) 1
Color controlling genes on autosomal chromosomes (tiger spot, gradient, additive white, all white, key color, blue, milk, brown)
The color of a cat is determined by the sex chromosome. That is to say, male cats are either red or black. Female cats are red, black or red black
… but the cats we saw were so different. Why. This is because, in addition to the sex chromosomes that determine the color of cats. There are many genes on the autosomal that control the color of cats. When these genes act, the color of cats changes.
For example, a cat with red on its sex chromosome is red. But if it has spot genes on its autosomal, the cat is red tiger spot. If there is also the role of desalination gene, this cat is milky tiger spot, if there is a whitening gene effect. This cat is milky and white. If there are all white genes. Then we can’t see the milky spots of the cat. All you see is a white cat. But this white cat is still a red cat, and red can be inherited from kittens. This white cat also has tiger spot, whitening and desalination genes. These can all be passed on to the next generation. If the next generation is not all white, the effect of these genes can be seen in cats.
The genes on the autosome are one-on-one. A pair of genes controls a change. Each pair of genes is dominant and recessive.
In a pair of genes, if both genes are dominant, or if one is dominant and the other is recessive, cats show the characteristics of dominant genes.
If two are recessive, the recessive gene can work.
The dominant and recessive genes in common cat colors are attached
Upper case is dominant (red English), lower case is recessive (Black English)
For example, tiger spot is a dominant gene, but it is a recessive gene (solid color). Let’s use a to express the gene for tiger spot. A means no tiger spot (solid color). Because these genes are a combination. Therefore, the pair of genes in a tabby cat can be AA or AA (a is dominant, and a is recessive gene, so it doesn’t work).
If the cat is a pure color, since the tiger spot is a dominant gene, as long as there is a tiger spot gene, it will be displayed. Therefore, it can be said that the pure cat has no tiger spot gene. That is to say, the tiger spot gene of this cat is actually two recessive solid color genes, expressed by AA.
… pure and pure cannot produce tabby cats. Because pure color is recessive, since recessive can be expressed (AA), it proves that the two cats have no dominant tiger spot gene at all. If the parents do not have the tiger spot gene, it is impossible for the offspring to inherit it.
But why do two tiger spotted cats give birth to a solid color cat. Because when the genes of two tiger spots are AA (although there is a pure color gene, but because of the dominant gene, what we see is tiger spot), kittens take one gene from their parents, and some kittens can get one a from their parents. Then this kitten is AA, and the double recessive gene is the pure color kitten. The chance is one quarter (Table 2).
Drawing a picture should make it easier for people to understand
It is very clear that all the results of explicit and recessive combination are shown in the figure. Just as the gene of pure cat is recessive, the gene of a pure cat can be regarded as (AA) in the figure, while the cat with tiger spot is (AA) in the figure. It is easy to see that if the cat with tiger spot is AA, the kitten will not produce pure color in any case (as shown in Table 5). If the tabby cat is AA, half of the kittens will be solid colored (see Table 4).
In the same way, hair color control genes on other chromosomes are calculated in this way.
Give me a few examples
A black and white male cat matches a red and white female cat. What would a kitten look like?
The black and white cat is actually a pure black cat, because it has the function of adding white gene, so it is black and white. Red and white flowers are the same. First, the additive gene was excluded and calculated as a black male cat and a red female cat
If a black male cat matches a red female cat, the little male cat inherits the color of his mother. It must be red. The female must be red and black.
3. Blue and milk color are fade colors, belonging to recessive gene (a is not desalination, a is Desalination), male and female do not appear fade color, showing dominant dark color. It turns out that the pair of desalination genes they have must have an a. But they all carry a recessive desalination gene A (which can only be guessed).
If it’s really the parents’ desalination gene is AA. One in four kittens are likely to fade out (Table 2). Kittens with the AA dilution gene will lighten the original color. If the cat was originally red and black, it would turn blue and milk; if it was red, it would become milk. But if any one of the parents does not carry the recessive gene, there will never be a faded cat.
4. Both male and female cats are white cats, and additive white is a dominant gene (a means that some places do not show color, that is, white; a is full color, that is, no white). The parents’ whitening genes are 1, AA and AA, 2, AA and AA, 3, AA and AA. In the first case, all kittens are white. In the third case, one in four kittens may not have white color.
5 and the key color genes are also recessive. If both parents are so clever at carrying a key color recessive gene in the key color gene, one-quarter of the kitten may also be the key color.
Brown is also recessive, as above, may also produce brown kittens.
1. More than three-quarters of kittens may be all white, and less than one fourth may be pure.
2. If it is a male cat: more than 3 / 4 of the chances are red plus white kittens, and less than 1 / 4 of the chances are red and solid kittens.
3. Kitten: more than 3 / 4 of the chance is red and black plus white kittens, that is, three flowers. Below 1 / 4 of the chance is red and Black Turtle kittens.
On the basis of the above fur color, if some kittens get their parents’ recessive desalination gene at the same time, they will lighten their color (the chance of getting out of the faded kittens is one in four). Key color and fade color, brown color, the same as above. So the kittens have a smaller chance to get the key colors, the colors, and the brown colors.
Cat coat color inheritance 2 (an autosomal gene controlling coat color) 2
Although it is said that the color of a kitten can only be inherited from its parents, the genes controlling the color on the autosome can be inherited from the parents above. Therefore, if you want to know whether cats carry some invisible recessive genes, it’s better to have the color and pattern records of several generations of the ancestors. It can not be 100% correct, only a little less error. There is no ancestral record, and the best way to match cats with some cats with double recessive genes is to infer the genes of big cats from the color of kittens.
… For example, if you want to know whether the cat has a recessive gene with the key color, you can match the cat with a key color. If half of the kittens born are of the key color, the pure black cat will have a key color gene. If the kitten will never have the key color gene, it will prove that the cat does not have the key color gene Any other cat with a key color can’t match a cat with a key color 100 times (Chart 5).
… if it does not have the key color gene, although it can’t match the key color cat with the key color cat, all the kittens must carry a recessive key color gene (Chart 5), that is, although its offspring are not the key color genes, they are the carriers of the key color genes. These kittens with a key color gene will be able to produce half of the kittens with the key color gene in the future.
Let’s take the above example a: add the tiger spot gene to the black and white male cat to make it brown and white. It’s hairy. Female cat according to the original yellow and white flowers, is short hair. What about kittens?
1. Tiger spot is dominant gene (a shows tiger spot, a does not show tiger spot, solid color), male cat is AA or AA. The female cat is solid color and the tiger spot gene is AA. When male cats are AA, all kittens are tiger spots. When the male cat is AA, half of the kittens are solid and half are tiger spots.
Short hair is a recessive gene, long hair is a dominant gene. The female cat has short hair and the gene is AA or AA. If the female cat is AA, the kittens are all short haired. When the female cat is AA, half of the kittens are short and half are long.
At least one and a half of these kittens are short haired, maybe all of them. At least half of the kittens are tiger spotted, maybe all of them.
If you have a kitten with a parent’s desalination gene, it will lighten its own color, the key color is the same as the brown color. You need both parents to have recessive genes, so that the kitten has a quarter chance of becoming faded, focused, brown.
Final calculation result (result of example a)
Little male cat:
Half may or may not be: hairy Red tiger spot with white or red with white, the chance of red tiger spot adding white accounted for more than half of the long hair. There are very few may be milk and white, red tiger spot or pure red, and some of the key brown color and so on.
More than half or all of them may be short hairy Red tiger spot with white or red with white, the chance of red tiger spot adding white accounted for more than half of short hair. There are very few may be milk and white, red tiger spot or pure red, and some of the key brown color and so on.
Half may or may not be: hairy Red black and white three flowers, or red and black tiger spot plus white, tiger spot plus white chance point hair more than half. There are very few possible blue cream white three flowers, there are some red and black tiger spots, key, brown color and so on.
More than half or all of them may be: short hairy Red black and white three flowers, or red and black tiger spot plus white, tiger spot plus white chance point short hair more than half. There are very few possible blue cream white three flowers, there are some red and black tiger spots, key, brown color and so on.
A cat with two recessive genes cannot produce a cat with a dominant gene. For example, blue and blue cannot produce black cats, and long hair and long hair cannot produce short hair. Solid color and solid color can not produce tiger spot, focus and focus can not be out of focus cat.
The cat with two dominant genes may give birth to a recessive one. For example, black and black can produce blue, short hair and short hair can produce long hair, tiger spot and tiger spot can produce solid color, white and white can produce other kinds of flowers.
The above calculation is purely a written formula. In fact, there are bound to be differences.
It’s like a litter of kittens should be half male, but in fact most people either have more females or more males. But it’s only a matter of birth. If we calculate the sex of cats in the world, it must be half male and half female.
The above colors are only suitable for most cats. Each cat has its own genetic mutation, which may not be found in other cats. It seems that I have never seen a blue cat in China, which proves that there is no highly diluted gene in the pedigree of domestic cats. For example, it is not absolutely true that black cats are originally black. In some cat breeds, the all black is just like the white cat here. It is another deepening gene that covers the cat’s original color. But this deepening base is only a very individual cat species. The black color of this cat is not suitable for a solid color watch. The most obvious example is our common leopard cat, as well as black leopard, which belongs to this kind of deepening gene effect. So color lists are not everything. Different cats have different genes.
Questions about standard spot and fish bone spot
… for example, a standard spot matches a fish bone spot. The genes for both stripes are dominant, so if their kitten happens to get the genes for both stripes in their parents, what stripes will the kitten see? I’m confused about this. If the two spots are alleles, they should be like red and black. The kitten takes these two colors and shows red and black. But I’ve never seen a cat with standard spot and fish bone spot. Whether one of these two stripes is stronger when combined, but I don’t know which one is. But I found a theorem that the standard spot and the standard spot can’t produce fish bone spot. According to my guess, if the theorem is like this, then the standard spot must be recessive in the relative fish bone spot, so it is impossible to produce fish bone spot. According to this theorem, if there is a fish bone spot and a standard spot act at the same time, the fish bone spot should be displayed.
Questions about silver and brown tiger spots
The problem is the same as above. Both of the tiger spot genes act on the black, one is to turn the black into black and the other is to turn the black into brown black spot. If the kitten takes the signals of both spots. Is it a silver tiger or a brown tiger? But as for the Silver Tiger spot and the brown tiger spot, I personally guess that if there is a dominant one, most of them are brown tiger spot. Because brown tiger spot is the most primitive spot, Silver Tiger spot should be the gene mutation of brown tiger spot and then cultured. In general, most gene mutations are recessive, but of course a considerable part of them are dominant. For example, white is the gene mutation that is dominant. (but I don’t know why, I always think that the gene of Silver Tiger spot is not as single as I imagined, or there are more genes working together
Questions about the role of common genes
It’s like a cat with a pair of eyes should have a kitten with eyes, but if this kitten is a key color, then its eyes will turn blue. This is the coat color gene that affects the eye color gene. Jinjila can’t line the eye nose line. It may be that the hair color has an effect on the length of the nose. If this is the case, maybe many genes will interact with each other, forming a phenomenon that is different from the results calculated by the formula that only takes the genes separately.
Is red tiger cat’s question
All red cats, even if they are solid, have faint tiger spots to see. It is proved that the recessive gene that does not show tiger spot has weak effect on red, but although these red cats have tiger spot, its genetic gene is still pure color. It should be difficult for a red cat to tell whether it has a dominant tiger spot gene or a recessive one
The question of “white” is overt or recessive
White cats are really troublesome. Because cats have white hair, there are five possibilities, three of which have been listed in the table, which are recessive. But there are two possibilities that are dominant. Even if it is a cat with a key color, it may become completely white because of the temperature problem of the cat’s mother. I was completely confused. How do you see it as dominant or recessive? Later, I finally realized that recessive is called albinism, In addition, the cat’s white eyes (blue eyes) may be the most common cause of hearing loss, Blue eyes will not appear. For example, white cats and cats with all white eyes are not blue
Doubts on the distribution of flower color in the inheritance of leukoplakia
… if the kittens born by two white kittens are white, will the white areas change randomly or the white areas of parents overlap or decrease? I have no information or experience in this respect. But there are a lot of examples in genetics that the effect of white can be calculated in the next generation, and I feel it is the same from other people’s white cats matching kittens. Because I observe especially the face, many color separations are inherited from inverted V, which can be closely inherited from parents’ inverted V, which proves that the pattern adding white should be regular and can be calculated, Then the white part should be the white spot that the kitten gets from its parents, and then the white spot of the kitten is superimposed
If a cat x with all white left ear and all black other colors has one dominant gene and one recessive gene, the other is a cat with all white right ear and all other black cat y. if one of the kittens just takes their two dominant genes, the kitten will be white in both ears and all black in others
… if the above kitten a with two dominant white spots matches the other one with a white spot on its back and a black one on the other (this kitten also shows and hides one)
… it’s obvious that a has a dominant gene for white spots in his left ear and a dominant gene for white right ears. Kittens can only get any one of the genes for white ears on a (so kittens can’t have both ears white). B has a dominant gene for white spots on his body, and the other is recessive, That is, the gene without white spot. Kittens can also get the gene or one of them from B
1. If their kitten takes a gene for white left ear in body a and a gene for white circle in body B, then the kitten will be white in left ear, with a white spot on his body and black in other places
2. If their other kitten takes a right ear white gene in a and a recessive gene without white in B, then this kitten is a white right ear kitten and other all black kittens
… genetics is broad and profound, and many results that can only be achieved through the interaction of genes are not as simple as we calculate on paper. Due to the limited level, I can’t understand it in depth. The above calculation method can only be used as a reference. There are many problems that have not been solved yet. I hope more people who know more can give me more experience and reference materials, and let me try my best to calculate the color more accurately.
I found an article that looked very profound. I don’t understand it personally.. I don’t know if you mean that..? I hope it can help you~~
The color of the cat
There are only two colors of cats, red and black. There is no other color except for. The faded color of red is milky. The fade color of black is blue.
Color in cats is inherited on the sex chromosome.
High school biology teacher taught a pair of chromosomes to control the sex of a person. The same is true for cats. The common XY is represented, and the female is represented by XX. Offspring take a letter from their parents. If you take y from your father and X from your mother (you can only tak