Podcast
Questions and Answers
What is the term for the selection process that eliminates changes that are harmful to the host's fitness?
What is the term for the selection process that eliminates changes that are harmful to the host's fitness?
Purifying selection or negative selection
Describe directional selection in terms of genetic variance and phenotype shift.
Describe directional selection in terms of genetic variance and phenotype shift.
A population's genetic variance shifts toward a new phenotype under environmental changes.
What is the term for the selection process where genetic variance increases due to the selection of extreme phenotypes with specific advantages?
What is the term for the selection process where genetic variance increases due to the selection of extreme phenotypes with specific advantages?
Disruptive selection
Explain balancing selection and why polymorphism is maintained.
Explain balancing selection and why polymorphism is maintained.
Define sexual selection and explain how it influences reproductive success.
Define sexual selection and explain how it influences reproductive success.
Give an example of ecological factors influencing mating behavior.
Give an example of ecological factors influencing mating behavior.
Explain why natural selection cannot produce perfect organisms according to the text.
Explain why natural selection cannot produce perfect organisms according to the text.
How does evolution interact with chance, natural selection, and the environment?
How does evolution interact with chance, natural selection, and the environment?
What type of selection favors variants that increase in frequency until they dominate the population?
What type of selection favors variants that increase in frequency until they dominate the population?
Explain the concept of disruptive selection in terms of genetic variance and phenotype selection.
Explain the concept of disruptive selection in terms of genetic variance and phenotype selection.
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