Rate of Evolution Flashcards

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1
Q

What happens when selection pressures are high?

A

The rate of evolution is rapid.

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2
Q

What are selection pressures?

A

Any factor in the internal or external environment that reduces the reproductive success of a population and influences the frequency of traits in a population.

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3
Q

Why does a shorter generation time result in a high rate of evolution?

A

There are more generations in a set period time. Mutations occur during meiosis and DNA replication.

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4
Q

How does a warmer climate increase the rate of evolution?

A

Heat tolerant individuals have an advantage. Over many generations this process produces a population with adaptations for a hotter environment.

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5
Q

What is horizontal gene transfer?

A

Sharing of beneficial gene transfer between different lineages through sexual reproduction in bacteria.

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6
Q

What does horizontal gene transfer result in?

A

Genetic variation and antibiotic resistance

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