Answers AISD-Biology B CR 25-26Natural Selection

Natural Selection Answers

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In a mouse population, some mice have thicker fur than others, but there are more mice with thinner fur. The climate in which these mice live has slowly gotten colder.

The adaptation of thinner fur will be selected over thicker fur, and the population will remain unchanged.

The adaptation of thicker fur will be selected over thinner fur, and the population will remain unchanged.

The adaptation of thinner fur will be selected over thicker fur, and the population will evolve.

The adaptation of thicker fur will be selected over thinner fur, and the population will evolve.

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Which statement best describes how reproduction leads to natural selection in a population?

Organisms do not produce many offspring, so all of them can survive and pass on their traits.

Organisms overproduce offspring; consequently, all of them are likely to survive and pass on traits.

Organisms overproduce offspring, so only some survive and pass on their traits.

Organisms do not overproduce offspring; therefore, those that are produced will develop the best traits.

Which conditions are required for natural selection? Select three options. Populations have genetic variation.Organisms overproduce offspring.Environmental conditions remain stable.Traits are passed on to only some of the offspring.Nature selects favorable adaptations.

Populations have genetic variation.

Organisms overproduce offspring.

Environmental conditions remain stable.

Traits are passed on to only some of the offspring.

Nature selects favorable adaptations.

most likely

Bright mice were not able to blend into their environment as easily as dark mice, so they did not continue to survive and reproduce.

Bright mice produced fewer offspring than dark mice, so the bright mice became outnumbered within days.

Random changes in the genetics of bright mice produced more dark mice, so the bright mice quickly died off.

Random changes in the genetics of dark mice produced fewer bright mice, so the dark mice took over the population.

is the total disappearance of all members of a species.

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