Question

1.) When a population is split by a physical barrier such as a mountain range, interrupting gene flow: a) they can accumulate genetic differences while separated. b) they will evolve wings to fly over the mountains. c) they will become new species. d) they can evolve into new species over time. 2.) In allopatric speciation: a) populations do not exchange genetic information. b) populations can become reproductively isolated. c) populations are separated by some physical barrier. d) new species arise from within a population with no physical barriers to gene flow. 

          1.) When a
population is split by a physical barrier such as a mountain range,
interrupting gene flow:
a) 
they can accumulate
genetic differences while separated.
b) 
they will evolve wings
to fly over the mountains.
c) 
they will become new
species.
d) 
they can evolve into
new species over time.
2.) In
allopatric speciation:
a) 
populations do not
exchange genetic information.
b) 
populations can become
reproductively isolated.
c) 
populations are
separated by some physical barrier.
d) 
new species arise from
within a population with no physical barriers to gene flow.
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Added by Yesenia F.

Biology for AP Courses
Biology for AP Courses
Julianne Zedalis, John Eggebrecht
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1.) When a population is split by a physical barrier such as a mountain range, interrupting gene flow: a) they can accumulate genetic differences while separated. b) they will evolve wings to fly over the mountains. c) they will become new species. d) they can evolve into new species over time. 2.) In allopatric speciation: a) populations do not exchange genetic information. b) populations can become reproductively isolated. c) populations are separated by some physical barrier. d) new species arise from within a population with no physical barriers to gene flow.
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Transcript

-
00:01 Hello everyone the question here is what happens when the population of a species is split due to the appearance of a physical barrier which interrupts the gene flow.
00:25 So the answer here is that the physical barrier causes the population to be divided into two groups that cannot exchange genes anymore which will cause the accumulation of variations over time which will cause them to evolve into different species so the correct option here is option a now we'll come to the next question the question here is allopatric speciation...
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