rate of evolution Flashcards

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1
Q

what does it mean if the selection pressure is high?

A

rate of evolution is high

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2
Q

what happens if the rate of evolution is increased?

A

shorter generation time
warmer environments
sharing of beneficial DNA sequences

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3
Q

what do you need for evolution to occur?

A

variation
selection
time

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4
Q

what is selection pressure?

A

factor in internal or external environment

reduces reproductive success of a population

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5
Q

what is the effect of shorter generation time?

A

more generations in a set period of time
each cycle requires DNA replication
mutations occur during meiosis and DNA replication

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6
Q

effect of warmer climates

A

exters selection pressure on all organisms

heat tolerant will have an advantage carry gene on

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7
Q

what is horizontal gene transfer?

A

sharing of beneficial DNA sequences between sexual reproduction- creates variation

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8
Q

what does increase in variation allow in a population

A

adapt to changing environmental condition

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