Blue poppies native to China were grown at a plant-breeding center in California. The plants with the thickest leaves were most likely to survive and reproduce in the drier climate. After several generations, the percentage of thick-leaved plants had increased by 42%. This adaptation of the poppies to their new environment is due to _____.
- directional selection
The characteristics of the poppies shifted in response to the changed environment.

Question

05-12-2022
Biology

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Blue poppies native to China were grown at a plant-breeding center in California. The plants with the thickest leaves were most likely to survive and reproduce in the drier climate. After several generations, the percentage of thick-leaved plants had increased by 42%. This adaptation of the poppies to their new environment is due to _____.
- directional selection
The characteristics of the poppies shifted in response to the changed environment.

Sagot :

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tutorconsortium627 tutorconsortium627 · Answer 1 · 2022-12-09T03:08:03-05:00

This adaptation of the poppies to their new environment is due to directional selection. The characteristics of the poppies shifted in response to the changed environment.

What is directional selection?

In population genetics, directed selection is a mode of negative natural selection in which one extreme phenotype is favored over the other, causing allele frequencies to shift towards that phenotype over time. . Under directional selection, favorable alleles increase as a result of survival and reproductive differences between different phenotypes. The increase is independent of allele dominance and is eventually fixed even if the allele is recessive. First described as a form of natural selection. Other types of natural selection include stabilizing selection and perturbing selection. Each type of selection involves the same principles, but is slightly different. Destructive selection favors both extreme phenotypes distinct from extreme directional selection. Stabilizing selection favors an intermediate phenotype and reduces population variation over time.

Therefore, This adaptation of the poppies to their new environment is due to directional selection.

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