Question

1. in cats, the gene for calico (multicolored) cats is codominant. females that receive a b and an r gene are both black and orange (tortoiseshell) males can only be black or orange.

show the cross of a female tortoiseshell cat $x^bLXB0y$
how many offspring will be:
female / calico ____
female / black ____
male / black ____
male / orange ____

1. show the cross of a female black cat and a male orange cat.

how many offspring will be:
female / calico ____
female / black ____
male / black ____
male / orange ____

Explanation:

Step1: Define parental genotypes

Female black cat: $X^B X^B$; Male orange cat: $X^R Y$

Step2: Set up Punnett square

	$X^R$	$Y$
$X^B$	$X^B X^R$	$X^B Y$

Step3: Count offspring phenotypes

Count each genotype's corresponding phenotype.

Answer:

Punnett Square:

	$X^R$	$Y$
$X^B$	$X^B X^R$	$X^B Y$

Offspring Counts:

Female / Calico: 2
Female / Black: 0
Male / Black: 2
Male / Orange: 0