Question

in cats, some are black, some are orange, and some are calico (fur that is both black and orange). all calico cats are always female. this trait represents two inheritance patterns. List which two and explain how you know

Answer 1

Answer:

Calico cats, white coat with black and orange patches, have two inheritance patterns an X-linked character and X-chromosome inactivation.

Explanation:

The inheritance patterns in calico cats are called complex inheritance. In this case, the gene that determines color - black ($X^{b}$) or orange ( $X^{B}$ ) - is found only on the X chromosome, and is absent on the Y chromosome.

• A male cat will only express the color that is found in the gene present on its single X chromosome, so it will be black ($X^{b}$Y) or orange ($X^{B} Y$).
• In female cats, with two X chromosomes, in the heterozygous form ($X^{B} x^{b}$) there is mutual inactivation of each of their X chromosomes, with the consequence of a color with black and orange patches, something similar to codominance.

It is clear that the dominance, in this case, is uncertain, although it has been conventionally accepted that the color orange can be dominant over the recessive, something that cannot be demonstrated in the case of calico cats.

Learn more:

X-linked inheritance example https://brainly.com/question/6499154