in cats males are xy?
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In cats, males are XY and females are XX. A gene on the X chromosome controls fur colour in cats. The allele G codes for ginger fur and the allele B codes for black fur. These alleles are codominant.
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Male calicoes can happen when a male cat has two X chromosomes (Klinefelter syndrome, with XXY sex chromosomes and generally sterile), is a chimera with two different cell types, or rarely when some skin cells of the developing kitten spontaneously mutate. Calico cats can also be lighter in color—dilute calicos.
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Because genetic determination of coat colors in calico cats is linked to the X chromosome, calicos are nearly always female, with one color linked to the maternal X chromosome and a second color linked to the paternal X chromosome.
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Male Savannahs are typically larger in size and sterile until the F5 generation or so, although the females are fertile from the F1 generation. As of 2011, breeders were noticing a resurgence in sterility in males at the F5 and F6 generations. Presumably, this is due to the higher serval percentage in C and SBT cats.
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Their gender: Ginger cats are more likely to be male than female. ... Females have two X chromosomes and so need two copies of this gene to become ginger, whereas males need only one. This means there are roughly three males to one female ginger cat. Ginger tom cats father tortoiseshell or ginger females.
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Most, but certainly not all, orange tabby cats are male. Orange tabby cats are about 80/20 male to female.
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Their gender: *This is because the “ginger gene” which produces the orange color is on the X chromosome. Females have two X chromosomes and so need two copies of this gene to become ginger, whereas males need only one. This means there are roughly three males to one female ginger cat.
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There is not just one breed of black cat. There are 19 cat breeds in the Cat Fanciers Association directory that list “black” as a color option. Many black cats have golden eyes, which is the result of high melanin pigment content in their bodies. Black cats can be boys or girls, but more are male than female.
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The other is the X chromosome. Y is normally the sex-determining chromosome in many species, since it is the presence or absence of Y that typically determines the male or female sex of offspring produced in sexual reproduction. In mammals, the Y chromosome contains the gene SRY, which triggers male development.
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Usually, a female baby has 2 X chromosomes (XX) and a male has 1 X and 1 Y (XY). But in Klinefelter syndrome, a boy is born with an extra copy of the X chromosome (XXY). The X chromosome is not a "female" chromosome and is present in everyone. The presence of a Y chromosome denotes male sex.
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Ginger cats are more likely to be male than female. *This is because the “ginger gene” which produces the orange color is on the X chromosome. Females have two X chromosomes and so need two copies of this gene to become ginger, whereas males need only one.
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While their attire may appear masculine, there are a fair share of female tuxedo cats. Unlike orange tabbies, who have a higher percentage of males, or calico or tortoiseshell cats, who are usually female, tuxies can easily be either sex.
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About 81 percent of orange cats are male, says Bell. While female cats will inherit an orange coat only if they carry the orange gene on both X chromosomes, if a male carries the orange gene at all, he will be orange, says Konecny.
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Only about 1 in 5 orange tabby cats is female. Because females possess two Xs and males possess XY, male cats only need the orange gene from their mothers to become a ginger—making them much more likely to carry on the trait.
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Males, or toms, can be friendlier than females. Intact male cats “spray” to mark their territory and “howl” for females (this is usually not a problem if you get him neutered). Female cats tend to be more reserved than males but are far less likely to spray.
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Did you know orange tabby cats are typically male? In fact, up to 80 percent of orange tabbies are male, making orange female cats a bit of a rarity. According to the BBC's Focus Magazine, the ginger gene in cats works a little differently compared to humans; it is on the X chromosome.
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Distinguishing Males from Females Is Tricky At first glance, even professionals find it tricky to distinguish a female kitten from a male. However, a few characteristic differences can be observed in kittens as young as five weeks old—genital spacing, coat color, and behavior—indicating their sex.