LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Different members of the same species are geographically isolated for many generations. What will likely happen to the populations?
A
Each population will evolve different traits influenced by their specific environments.
B
Random recombination will ensure that the two population evolve in a similar manner.
C
The two populations will evolve the same future traits because they are starting with similar genetic material.
D
One of the populations will fail to evolve because it was removed from its natural environment.
Explanation: 

Detailed explanation-1: -Allopatric speciation (1) occurs when a species separates into two separate groups which are isolated from one another. A physical barrier, such as a mountain range or a waterway, makes it impossible for them to breed with one another.

Detailed explanation-2: -Speciation is the process by which new species form. It occurs when groups in a species become reproductively isolated and diverge. In allopatric speciation, groups from an ancestral population evolve into separate species due to a period of geographical separation.

Detailed explanation-3: -A new species may form after a group of organisms becomes separated from the original population. This group now forms a new population. Over the course of time, the two populations adapt to their environments. Eventually, the populations become so different that they cannot mate with each other anymore.

Detailed explanation-4: -Isolated populations have been shown to suffer from increased rates of inbreeding depression, genetic drift, and reduced genetic diversity.

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