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Lets let R represents tongue-rolling, r represent a non -roller, T represent ability to taste PTC,...

Lets let R represents tongue-rolling, r represent a non -roller, T represent ability to taste PTC, and t represent non tasting. Suppose a women who is both a heterozygous tongue roller and a non PTC taster marries a man who is a heterozygous tongue roller and is a homozygous PTC taster. What will their children's phenotypes ratio be?

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Answer #1

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heterozygous tongue roller and a non PTC taster (Rrtt) x heterozygous tongue roller and homozygous PTC taster (RrTT)

RT

rT

Rt

RRTt (tongue roller and a PTC taster)

RrTt (tongue roller and a PTC taster)

rt

RrTt (tongue roller and a PTC taster)

rrTt (non-tongue roller and a PTC taster)

Ratio is 3:1

3:tongue roller and a PTC taster

1: non-tongue roller and a PTC taster

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