According to the Punnett square, what are the probabilities of each resulting genotype/phenotype when 2 heterozygous pea plants are crossed. Match the probability of the resulting phenotype to the genotype.

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25% Tall offspring
50% Tall offspring
25% short offspring
TTttTt

1 answer

When crossing two heterozygous pea plants (Tt x Tt), the Punnett square results in the following genotypes and their corresponding phenotypes:

  1. Genotype TT: Homozygous Tall
  2. Genotype Tt: Heterozygous Tall
  3. Genotype tt: Homozygous Short

The resulting genotypic ratios from the cross are:

  • 1 TT (Tall)
  • 2 Tt (Tall)
  • 1 tt (Short)

This leads to the following phenotype probabilities:

  • 3 Tall (TT + Tt) = 75%
  • 1 Short (tt) = 25%

Now, matching the probabilities of each resulting phenotype to the genotype, we have:

  • 25% Short offspring: tt
  • 50% Tall offspring: Tt
  • 25% Tall offspring: TT

Here's how you can categorize them correctly:

  • 25% Short offspring → tt
  • 50% Tall offspring → Tt
  • 25% Tall offspring → TT

Please note that the probabilities should ideally match the stated percentages, which aligns with the characteristics derived from the Punnett square results.