A husband and wife have two sons. One boy has a straight thumb, while the other has a bent thumb. What causes this difference?

asked Dec 12, 2023 32.2k views

9 votes

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1 vote

The difference in genetics in both parents cause this.

Tmhs answered Dec 13, 2023

by Tmhs

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4 votes

Answer
The boys have different alleles

Levar answered Dec 18, 2023

by Levar

7.8k points

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