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In human, the allele for brown eyes (B) is dominant over that for blue eyes (b). A brown eyed woman marries a blue eyed man, and they have six children. Four of the children are brown eyed and two of them are blue eyed. a) What is the genotype of blue eyes offspring? b) What is the woman's genotype? c) Mention the above process of inheritance in a flow chart.
Asked by swetalinasamantaray022 | 29 Dec, 2022, 01:27: PM
answered-by-expert Expert Answer
The allele for brown eyes (B) is dominant over that for blue eyes (b).
A brown eyed woman (BB/Bb) marries a blue eyed man (bb).
Possibility 1
Parents - BB × bb
Offspring - Bb
Possibility 2
Parents - Bb × bb
Offspring - Bb, bb
 
Now, since out of 6 children, 4 are brown eyed and 2 are blue eyed, it implies that the woman is heterozygous for brown eyes with genotype (Bb).
 
Therefore, 
a) The genotype of blue eyes offspring will always be bb.
b) The woman's genotype is Bb.
Answered by Sheetal Kolte | 30 Dec, 2022, 10:29: AM

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