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Secondary sex traits
________ can develop through sexual selection, giving individuals an advantage in mating.
Natural selection
________ resulted in a higher average beak size in the population in one generation.
Darwin
________ offered copious evidence in The Origin of Species that Earth's life had developed through time, and he postulated.
Chance variations
________ in allele frequencies across generations tend to diminish genetic diversity in genetic drift.
Microevolution
________ is caused by factors other than natural selection.
particular hereditary qualities
Individuals with ________ are likely to live and reproduce at a faster rate than other individuals due to those features under natural selection.
Evolution
________ does not start from the beginning with the ancestral anatomy; rather, ________ co- opts existing structures and adapts them to new conditions.
movement of alleles
The ________ across populations, known as gene flow, tends to diminish genetic differences between groups over time.
Natural selection
________, genetic drift (chance occurrences that modify allele frequencies), and gene flow (the transfer of alleles across populations) are the three primary processes that can induce allele frequency change.
Natural selection
________, unlike genetic drift and gene flow, continuously raises the frequencies of alleles that improve survival and reproduction, therefore enhancing the degree to which organisms are well- suited for living in their environment.
natural selection
The term*** Balancing selection*** refers to a phenomenon that occurs when ________ maintains two or more forms in a population.
