Andalusian Chicken Genetics: Incomplete Dominance

What would the phenotypes of the offspring be if you mated a heterozygous male with a heterozygous female? The answer would be B: 25% black feathers, 50% gray feathers, 25% white feathers.

When it comes to Andalusian chickens, their feather color is determined by incomplete dominance. This means that when a black feathered chicken (BB) is crossed with a white feathered chicken (bb), the offspring will have gray feathers (Bb).

In this scenario, when you mate a heterozygous male (Bb) with a heterozygous female (Bb), there are different possibilities for the offspring’s phenotypes. The Punnett square for this cross would result in 25% of the offspring having black feathers (BB), 50% having gray feathers (Bb), and 25% having white feathers (bb).

Therefore, the correct answer is B: 25% black feathers, 50% gray feathers, 25% white feathers. This showcases the beauty of genetics and how traits can be inherited from generation to generation in a unique and fascinating way.

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