20. Quantitative Genetics
Analyzing Trait Variance
1:32 minutes
Problem 6d
Textbook Question
Textbook QuestionAn inbred strain of plants has a mean height of 24 cm. A second strain of the same species from a different geographic region also has a mean height of 24 cm. When plants from the two strains are crossed together, the F₁ plants are the same height as the parent plants. However, the F₂ generation shows a wide range of heights; the majority are like the P₁ and F₁ plants, but approximately 4 of 1000 are only 12 cm high and about 4 of 1000 are 36 cm high.
Indicate one possible set of genotypes for the original P₁ parents and the F₁ plants that could account for these results.
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