X Linked Genetics in the Calico Cat

Calico is a coat color found in cats, which is caused by a SEX-LINKED, CODOMINANT allele.

B = black, R = orange, and BR = calico.

The following genotypes are possible;

Female cats can be black X^BX^B, orange X^RX^R, or calico X^BX^R
Male cats can be black X^BY or orange X^RY

Show each of the crosses below and include the phenotypic ratios of the offspring.

1. A black male crossed with an orange female

 

2. An orange male crossed with a calico female

 

3. A black male crossed with a black female

 

4. An orange male crossed with an orange female

 

5. A black male crossed with a calico female

 

 

**If you are a cat breeder, what type of parents should you choose to have the MOST number of calico kittens?