Question

In rabbits, the fluffy gene (F) is located 10 mu away from the agouti colour gene (A). A fluffy, agouti rabbit is crossed to a smooth-haired, albino rabbit. All F1 progeny are fluffy and agouti. What phenotypic ratios would be expected if an F1 was crossed to a smooth-haired, albino individual?

Answer 1

Cross:  AA   ×    aa

F1 Progeny:  Aa , Aa, Aa, Aa

Now, F1 Cross: Aa  ×  aa

Progeny = Aa, Aa, aa, aa

Phenotypic ratio would be: (Agouti to smooth-haired) = (1:1)

Hope this helps!