The mother has short ears with a free lobe (dominant), and the father has long (dominant) ears with an adherent lobe.

The mother has short ears with a free lobe (dominant), and the father has long (dominant) ears with an adherent lobe. The son from this marriage has long ears with a free lobe, and the daughter has short ears with an adherent one. Determine the genotype of the parents and children.

Let us designate the dominant and recessive alleles of the genes: A – long ears, a – short ears, B – free earlobe, b – accreted earlobe. Genotypes P: (female) aaBb, (male) Aabb. F1 genotypes: (female) AaBb, (male) aabb.

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