1.Which of the following would most likely cause geographic isolation?
A.volcanic eruption
B.a large tree falling
C.widening of a lake
D.a forest fire
2.Which of the following can occur to two segments of a population if they are geographically isolated?
A.They can only share some types of genes.
B.Eventually, they become separate species.
C.They find a way to come back together.
D.Both groups most likely become extinct.
3.Which of the following best explains why organisms of the same species that become isolated eventually become different from each other over time?
A.They do not have any of the same genes.
B.They are exposed to different environments.
C.Their DNA mutates.
D.They both find ways to survive.
2007-02-16
03:02:17
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5 answers
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asked by
Anonymous