Question

question 11
in calico cats, the trait for fur color is both x - linked and codominant. black and orange being the codominant alleles you will be tracking. callco females have black and orange spots on a white coat. there are typically no calico males.
cross a calico female with an orange male cat and determine the expected phenotypic ratio.
1 black female cat
1 orange female cat
1 black male cat
1 orange male cat
2 calico female cats
1 orange female cat
1 orange male cat
1 calico female cat
1 orange female cat
1 black male cat
1 orange male cat
1 calico female cat
1 orange female cat
1 calico male cat
1 orange male cat

Explanation:

• Calico cats have the genotype \(X^{B}X^{O}\) (where \(B\) represents black and \(O\) represents orange, and these are codominant alleles on the X - chromosome).
• The orange male cat has the genotype \(X^{O}Y\).
• When we do a cross \(X^{B}X^{O}\times X^{O}Y\), we use the Punnett square method.
• The possible genotypes of the offspring are: \(X^{B}X^{O}\) (calico female), \(X^{O}X^{O}\) (orange female), \(X^{B}Y\) (black male), \(X^{O}Y\) (orange male).

Answer:

1 calico female cat, 1 orange female cat, 1 black male cat, 1 orange male cat.