A gardener crosses tall true-breeding pea plants with short true-breeding ones. Tall plants are dominant to short ones. He collects the seeds to grow F1 plants and then allows them to self-pollinate to form an F2 generation. Which of the following describes the traits of the offspring correctly?

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Mathematics

Jayvion

19 February, 00:21

A gardener crosses tall true-breeding pea plants with short true-breeding ones. Tall plants are dominant to short ones. He collects the seeds to grow F1 plants and then allows them to self-pollinate to form an F2 generation. Which of the following describes the traits of the offspring correctly?

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Phillip Holland · Answer 1

Let us represent the allele for tall height by T and that for short height by t. The parents of the F1 generation are TT and tt. After the first cross, the genotype of all of the members of the F1 generation is Tt. If these plants self polinate, the resulting genotypes will be TT, Tt, Tt and tt. Therefore, there is a 75% chance that the offspring in F2 is tall and a 25% chance that the offspring in F2 is short.