교과서 질문
Some humans have genes that make them resistant to infection by HIV. Would human populations likely evolve differently in areas of the world where HIV infection rates are high? Explain your logic.
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1. Introduction to Biology
Natural Selection and Evolution
Multiple Choice
Which type of selection leads to increased phenotypic and genetic variation?
A
Stabilizing selection
B
Directional selection
C
Disruptive selection
D
Artificial selection
검증된 단계별 안내1
Understand the concept of natural selection, which is a process where organisms better adapted to their environment tend to survive and produce more offspring.
Identify the different types of natural selection: stabilizing, directional, and disruptive selection.
Stabilizing selection reduces variation by favoring the average phenotype and selecting against extreme phenotypes.
Directional selection shifts the population's phenotype by favoring one extreme phenotype over the other, reducing genetic variation.
Disruptive selection increases phenotypic and genetic variation by favoring extreme phenotypes at both ends of the spectrum, leading to a bimodal distribution of traits.
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