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  1. Which of the following occurs prior to speciation?
AOrganisms of different populations join together.
BDifferent species share the same space.
CA population is divided.
DA major change on earth takes place.

  1. Which of the following must be true of their individuals if two populations are no longer the same species?
AThey do not have any of the same genes.
BThey do not share any of the same space.
CThey do not resemble each other at all.
DThey cannot reproduce successfully with each other.

  1. How does speciation start to take place on a genetic level between two isolated populations?
ALarge numbers of mutations occur.
BAllele frequencies change in different ways.
CNew genes are added to one group.
DRecessive alleles become dominant.

Verified Answer :

scme1702

1) C
A population has to be isolated for speciation
2) D
Different species are incapable of reproducing with one another
3) D
When a population is contained, the recessive alleles can become dominant within the population

The 3rd question is actually B. Allele frequencies change in different ways

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