23.1 Genetic Variation

Question 1

What is Genetic Variation?

Answer 1

Differences among individuals in the composition of their genes.

Question 2

What is Gene Variability?

Answer 2

It’s the measure of the tendency of individual genotypes in a population to vary from one another.

Question 3

What is Nucleotide Variability?

Answer 3

More nucleotides = more proteins = more genetic variation

Question 4

What is Geographic Variation?

Answer 4

It refers to differences among populations of traits across the natural geographic range of a species. (The primary source of subspeciation).

Question 5

What is Cline?

Answer 5

The gradual change in certain characteristics exhibited by members of a series of adjacent populations of organisms of the same species.

Question 6

Selection can only operate if ______ alleles exist for a given locus. (Single or Multiple)

Answer 6

Selection can only operate if MULTIPLE alleles exist for a given locus.

Question 7

True or False: Mutations that occur in somatic cells are lost when the individual dies.

Answer 7

True!

Question 8

True or False: Mutation rates tend to be slow in prokaryotes, and faster in plants and animals.

Answer 8

False! Mutation rates tend to be slow in plants and animals, and faster in prokaryotes.