In a certain plant, red fruit (R) is dominant over yellow fruit (r) and tallness (T) is dominant over shortness (t). If a plant with RrTt genotype is crossed with a plant rrtt genotype, what will be the percentage of tall plants with red fruits in the progeny?

Question

Accepted Answer

50%. A heterozygous dihybrid crossed with a double recessive produces four equally likely offspring types. Only one of those combinations has both dominant traits, and the two single-dominant combinations split the rest, giving half the progeny tall with red fruits.

In a certain plant, red fruit (R) is dominant over yellow fruit (r) and tallness (T) is dominant over shortness (t). If a plant with RrTt genotype is crossed with a plant rrtt genotype, what will be the percentage of tall plants with red fruits in the progeny?

Solution

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