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1

what does it mean if the selection pressure is high?

rate of evolution is high

2

what happens if the rate of evolution is increased?

shorter generation time
warmer environments
sharing of beneficial DNA sequences

3

what do you need for evolution to occur?

variation
selection
time

4

what is selection pressure?

factor in internal or external environment
reduces reproductive success of a population

5

what is the effect of shorter generation time?

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

6

effect of warmer climates

exters selection pressure on all organisms
heat tolerant will have an advantage carry gene on

7

what is horizontal gene transfer?

sharing of beneficial DNA sequences between sexual reproduction- creates variation

8

what does increase in variation allow in a population

adapt to changing environmental condition