AP BIOLOGY

EVOLUTION

PATTERNS OF EVOLUTION

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A hen pheasant chooses the rooster that gets to mate with her based on the length of his tail and spurs. Of which cause of evolution is this an example?

A	small population
B	mutations
C	natural selection
D	movement (gene flow)
E	nonrandom mating (sexual selection)

Explanation:

Detailed explanation-1: -Speciation is an evolutionary process by which a new species comes into being.

Detailed explanation-2: -They are: mutation, non-random mating, gene flow, finite population size (genetic drift), and natural selection.

Detailed explanation-3: -Evolution by genetic drift causes changes in populations by chance alone. Evolution by genetic drift occurs when the alleles that make it into the next generation in a population are a random sample of the alleles in a population in the current generation.

Detailed explanation-4: -Microevolution describes the evolution of organisms in populations, while macroevolution describes the evolution of species over long periods of time. Microevolution describes the evolution of organisms over their lifetimes, while macroevolution describes the evolution of organisms over multiple generations.

There is 1 question to complete.