Question

Genetic variation can be introduced into a population by: a) mutation in an individual's genetic code. b) the bottleneck effect. c) the selection of the fittest individuals in the population. d) a new allele arising from a single mutation in a gene. Question 25 (3 points) Genetic drift occurs when a population of organisms which normally don't travel great distances, like fruit flies, floats on a tree branch or piece of fruit across an ocean barrier to colonize a new location. True False Question 26 (3 points) Evolution: a) can only happen in populations with genetic diversity. b) happens within individuals during their lifetimes. c) always results in organisms that are perfectly adapted to their environments. d) is a combination of random, and non-random processes. Question 27 (3 points) New, closely related species which reconnect over part of their range may interbreed and produce infertile offspring. True False

          Genetic variation can be introduced into a population by:

a) mutation in an individual's genetic code.

b) the bottleneck effect.

c) the selection of the fittest individuals in the population.

d) a new allele arising from a single mutation in a gene.

Question 25 (3 points)
Genetic drift occurs when a population of organisms which normally don't travel great distances, like fruit flies, floats on a tree branch or piece of fruit across an ocean barrier to colonize a new location.

True
False

Question 26 (3 points)
Evolution:

a) can only happen in populations with genetic diversity.

b) happens within individuals during their lifetimes.

c) always results in organisms that are perfectly adapted to their environments.

d) is a combination of random, and non-random processes.

Question 27 (3 points)
New, closely related species which reconnect over part of their range may interbreed and produce infertile offspring.

True
False

Genetic variation can be introduced into a population by:

a) mutation in an individual's genetic code.

b) the bottleneck effect.

c) the selection of the fittest individuals in the population.

d) a new allele arising from a single mutation in a gene.

Question 25 (3 points)
Genetic drift occurs when a population of organisms which normally don't travel great distances, like fruit flies, floats on a tree branch or piece of fruit across an ocean barrier to colonize a new location.

True
False

Question 26 (3 points)
Evolution:

a) can only happen in populations with genetic diversity.

b) happens within individuals during their lifetimes.

c) always results in organisms that are perfectly adapted to their environments.

d) is a combination of random, and non-random processes.

Question 27 (3 points)
New, closely related species which reconnect over part of their range may interbreed and produce infertile offspring.

True
False

Added by Richard R.

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