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The ability to curl your tongue up on the sides (T, tongue rolling) is dominant to not being able to roll your tongue. A woman who can roll her tongue marries a man who cannot. Their first child has his father's phenotype. What are the genotypes of the mother, father, and child? What is the probability that a second child won't be a tongue roller?

Respuesta :

Answer:

genotype of mother - Tt

Gneotype of Father - tt

Child - tt

The probability that a second child won't be a tongue roller is 50 percent

Explanation:

Given ,

The ability to curl your tongue up on the sides i.e "T" is dominant to not being able to roll your tongue "t"

A woman who can roll her tongue marries a man who cannot.

let the Genotype of woman be"Tt"

and the genotype of father be "tt"

Tt * tt

Tt, tt, tt , Tt

Out of four offspring, two children have the ability to curl their tongue up on the sides and two cannot roll their tongue.

Hence,

genotype of mother - Tt

Gneotype of Father - tt

Child - tt

The probability that a second child won't be a tongue roller is

[tex]\frac{2}{4} * 100\\= 50[/tex]%

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