A. Tongue rolling (T) is dominant over non-tongue rolling (t). Right handedness (R) is dominant over left (r). A non-tongue rolling, left-handed woman marries a tongue rolling, right-handed man who is heterozygous for both traits. What are the possible genotypes and phenotypes of the offspring?
A. Tongue rolling (T) is dominant over non-tongue rolling (t). Right handedness (R) is dominant over left (r). A non-tongue rolling, left-handed woman marries a tongue rolling, right-handed man who is heterozygous for both traits. What are the possible genotypes and
B. A tongue rolling, right-handed man marries a non-tongue rolling, right-handed woman. Their first child is non-tongue rolling and left- handed. What are the genotypes of the parents?
- Mom:
- Dad:
C. A non-tongue rolling, right-handed man whose mother was left-handed marries a tongue rolling, right- handed woman whose mother was non-tongue rolling and left- handed. What are the possible genotypes and phenotypes of their children?
D. In man, a certain type of deaf mutism is recessive. Let (D) be normal and (d) be deaf-mute. A normal, right-handed man married a normal, right-handed woman. They had a child who was a left-handed deaf-mute.
- What were the genotypes of the parents? ______________________________________
- What was the genotype of the child? _________________________________________
- Expressed as a fraction, what is the chance that their only child would be left-handed, deaf mute? _____
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