A brown-eyed couple has a blue-eyed child. The trait of brown eye $(2)$ is dominant over that of blue-eyed $(2)$ . What is the genotype of the couple?

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A brown-eyed couple has a blue-eyed child. The trait of brown eye

(2)

is dominant over that of blue-eyed

(2)

. What is the genotype of the couple?

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Text solutionVerified

B is the dominant gene for the brown colored eye.
The genotype of the couple is Bb x Bb because only this combination can give 25% probability of bb genotype in progeny which accounts for blue eyes.
So, the correct answer is 'Bb × Bb'.

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Question Text	A brown-eyed couple has a blue-eyed child. The trait of brown eye $(2)$ is dominant over that of blue-eyed $(2)$ . What is the genotype of the couple?
Answer Type	Text solution:1
Upvotes	150