Question

If PP purple plants are crossed with pp white plants, what will be the possible combinations of factors if the F1 generation is allowed to self-pollinate?

Answer 1

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Answer 2

If PP purple plants are crossed with pp white plants, the F1 generation will all be Pp, which means they will all have a purple phenotype because P is dominant over p. If the F1 generation is allowed to self-pollinate, the possible combinations of factors in the F2 generation will be:

- PP (25%): Homozygous dominant plants with a purple phenotype
- Pp (50%): Heterozygous plants with a purple phenotype
- pp (25%): Homozygous recessive plants with a white phenotype

Therefore, the ratio of purple to white plants in the F2 generation would be 3:1.