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WorksheetsEvolution Quiz Review
Total questions: 10
Worksheet time: 6mins
Why is genetic variation important in helping a species survive?
The more varied a population, the less likely the environment is to change.
If the environment changes, some members of the species will probably have adaptations that enable them to survive and reproduce.
Disease rarely affects a population that has a lot of genetic variety.
If the environment stays the same, a species with genetic variety will probably evolve rapidly.
Individuals best suited to their environment survive and reproduce most successfully. This idea is known as
survival of the fittest.
struggle for existence.
descent with modification.
common descent.
The process by which organisms change over time is known as
evolution.
diversity.
unity.
descent.
When reproductive isolation prevents members of two populations from interbreeding and producing offspring, thus separating their gene pools, what process can occur?
directional selection
mutation
disruptive selection
speciation
Which is one reason that sexual reproduction provides more opportunities for genetic variation than asexual reproduction?
Mutations occur more frequently.
More offspring are produced.
Allele frequency increases.
There is a random re-assortment of DNA during meiosis.
What is a random change in allele frequency in a population called?
bottleneck effect
founder effect
genetic drift
directional selection
What five conditions are necessary to maintain genetic equilibrium?
The population must be very small, mutations must occur, there must not be random mating, natural selection must occur, and there can be no gene flow.
The population must be very small, there can be no mutations, there must be random mating, natural selection must occur, and there must be a balance in the gene flow.
The population must be very large, there can be no mutations, there must be random mating, there can be no natural selection, and there can be no gene flow.
None of the choices.
The movement of alleles into and out of a population due to migration is called a
a mutation.
gene flow.
non-random mating.
natural selection.
The process by which a population becomes better suited to its environment is known as
accommodation.
variation.
adaptation.
acclimation.
What conditions must be true for a group of animals to be considered a species?
They must be able to get along with each other.
They must have the same structures.
They must be able to reproduce and have fertile offspring.
They must be the same color.
