We are pretending that tongue-curling in humans is a dominant genetic trait.

Question

Suppose a man who is Tt for tongue-curling marries a woman who is also Tt for this trait. What are the possible genotypes and phenotypes of their children, and the percent chance for each?

Genotype Phenotype (curl or no curl) Percent Chance (number only)
TT
Tt
tt
Blank 1:
Blank 2:
Blank 3:
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Blank 6:

Answer 1

Genotype Phenotype (curl or no curl) Percent Chance (number only)
TT Curl 25% (1/4)
Tt Curl 50% (2/4)
tt No curl 25% (1/4)

Blank 1: Tt
Blank 2: Curl
Blank 3: 50%
Blank 4: tt
Blank 5: No curl
Blank 6: 25%