Question

1. can you curl your tongue up on the sides? tongue - curling in humans is a dominant genetic trait. 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? fill in the table:

Explanation:

Step1: Analyze the Punnett square

The Punnett square for \(Tt\times Tt\) gives the genotypes \(TT\), \(Tt\), \(Tt\), \(tt\).

Step2: Determine genotypes

• \(TT\): 25% chance.
• \(Tt\): 50% chance (\(Tt + Tt\)).
• \(tt\): 25% chance.

Step3: Determine phenotypes

Since \(T\) (tongue - curling) is dominant:

• \(TT\) and \(Tt\) show tongue - curling phenotype (75% total).
• \(tt\) shows non - tongue - curling phenotype (25% chance).

Answer:

Genotype	\(TT\)	\(Tt\)	\(tt\)
Chance	25%	50%	25%