Normal hearing in humans is determined by the dominant gene (M), and hereditary deaf-mute
| February 7, 2021 | education
Normal hearing in humans is determined by the dominant gene (M), and hereditary deaf-mute is determined by the recessive gene (m). A deaf-mute child was born in a family normal on this basis. Determine the genotypes of the parents.
Normal hearing – M, dominates over hereditary deaf-dumbness – M. If a deaf-mute child was born in a family with normal hearing, then his parents were heterozygous for this trait.
Parents: Mm × Mm
Gametes: M m * M m
F1: MM healthy child, with normal hearing MM healthy, with normal hearing, MM healthy with normal hearing, mm deaf-mute child (1: 2: 1).
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