Determine what genotypes children can have if the heterozygous mother has wavy hair and the father has straight hair (complete dominance of the trait).
Since heterozygosity is wavy hair, the dominant feature is small hair. Mother Bb, father has straight hair, then bb.
The mother has two types of gametes: B and b, the father has one type of gametes – b.
Genotypes of children: Bb, bb
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