In cats, tortoiseshell coat color appears in females. A ...

Question

In cats, tortoiseshell coat color appears in females. A tortoiseshell coat has patches of dark brown fur and patches of orange fur that each in total cover about half the body but have a unique pattern in each female. Male cats can be either dark brown or orange, but a male cat with tortoiseshell coat is rarely produced. Two sample crosses between males and females from pure-breeding lines produced the tortoiseshell females shown.

Cross I P: dark brown male × orange female
F₁: orange males and tortoiseshell females
Cross II P: orange male × dark brown female
F₁: dark brown males and tortoiseshell females

Why are tortoiseshell cats female?

Accepted Answer

Hello, everyone. Here we have a question that says tortoiseshell cats are female because the trait is caused by a gene located on the X chromosome. Which of the following. Mendel's law best describes the reason why tortoiseshell cats are almost always female towards shell. Cats are female because the trait is caused by gene located on the X chromosome. Females, as we know have two X chromosomes, they are X X while males only have one X chromosome, they are xy. This means that males cannot express the tortoiseshell coat color females. On the other hand, which have the two X chromosomes can have two different versions of the gene one from each parent. This allows them to express both dark brown and orange for resulting in the tortoise shell coat color. The law of independent assortment states that different genes are inherited independently of each other. So our answer choices are a the law of independent assortment, be the law of dominance. See the law of segregation or the law, all of the above. So our answer here is a the law of independent assortment as we spoke about earlier. Thank you for watching. Bye.

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