Question

If you examine 100 F, plants from the testcross and find that 53 have purple flowers with tall stems and 47 have white flowers with tall stems, you should conclude that the genotype of your original pea plant is ___________.

Answer 1

You should conclude that the genotype of your original pea plant is PpYy.

Step-by-step explanation:

In this case, you should conclude that the genotype of your original pea plant is PpYy. The testcross results show that 53 plants have purple flowers with tall stems and 47 plants have white flowers with tall stems. This matches the expected phenotypic ratio of a dihybrid cross involving two traits, indicating that your original plant was heterozygous for both traits.

Learn more about Genotype determination