In humans, a nose with a hump (A) is a dominant feature, and a straight nose is recessive. Full lips (B) are the dominant trait, and thin lips are the recessive trait. The genes of both traits are on different chromosomes. A man with a small nose and thin lips, whose mother had a straight nose and full lips, married a woman with a straight nose and thin lips. Identify the parental genotypes and possible offspring genotypes and phenotypes. How likely are children with full lips to be born in this family? In accordance with what law is the inheritance of these traits?
1. The genotype of the father – Aabb, mother – aabb. Genotypes and phenotypes of descendants:
Aabb – nose with a hump, thin lips, aabb – straight nose, thin lips.
2. The probability of giving birth to full-nosed children is zero.
3. The splitting occurred in accordance with the law of independent inheritance
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