Tongue rolling is a strict dominant trait. John and Mary are both heterozygous f

Question

Tongue rolling is a strict dominant trait. John and Mary are both heterozygous for tongue rolling (Tt). If John and Mary reproduce, what is the chance that their child will have the ability of on roll his/her tongue?
A.50% B.25% C.100% D.75% Tongue rolling is a strict dominant trait. John and Mary are both heterozygous for tongue rolling (Tt). If John and Mary reproduce, what is the chance that their child will have the ability of on roll his/her tongue?
A.50% B.25% C.100% D.75%
A.50% B.25% C.100% D.75%

Explanation / Answer

A.50%

The ability of the child tounge til would be 50% as both parents are heterozygous.

Tt × tt

Tt × Tt

Tt × TT

These would be the possible traits.

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