In humans,brown eyes (B) are dominant over blue (b). A brown-eyed man marries a blue eyed woman and they have three children,two of whom is blue-eyed.Draw the punnett square that illustrates this marriage. What is the man’s genotype? What are genotypes of the children.
The man's genotype is Bb.
The punnett square for this marriage would look like this:
B b
-------------------
b | Bb bb
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b | Bb bb
Therefore, the genotypes of the children would be:
- 2 children would be bb (blue-eyed)
- 1 child would be Bb (brown-eyed)