In pea plants tall is dominant and short is recessive. a heterozygous tall plant is crossed with a short plant. what is the expected genotype ratio?

Question

Biology

Cecilia Maxwell

8 February, 12:58

In pea plants tall is dominant and short is recessive. a heterozygous tall plant is crossed with a short plant. what is the expected genotype ratio?

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Answers (2)

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Maurice Ewing · Answer 1

Parents: Tt * tt

Possible genotypes: Tt, Tt, tt, tt.

So that's 2:2 since the plants have a 50% chance of being tall or short.

Alejandro Lam · Answer 2

If you were to come up with letters to represent those traits, (I used T for tall and t for short. Heterozygous mean that you'd have Tt, and short would have to be tt, since if you used a dominant allele, it would result in a tall trait. So Tt x tt on a punnet square would give you two of each, meaning the genotypic ratio is 2:2