Changing allele frequencies

Fill in the blank:

"_________________ are a measure of how common a particular allele is in the gene pool of a population."

• Traits

• Allele frequencies

• Point mutations

• Phenotypes

The variations of a gene are known as...?

• Genotypes

• Phenotypes

• Alleles

• Mutations

What best describes a mutation?

• An alteration in the nucleotide sequence of DNA.

• A change in allele frequencies.

• A negative result of changes due to the environment.

• The expression of a new phenotype.

What is NOT an example of a point mutation?

• Missense mutation

• Nonsense mutation

• Silent mutation

• Block mutation

When a substitution mutation results in the creation of a STOP codon, it is classified as what?

• Silent mutation

• Missense mutation

• Nonsense mutation

• Frameshift mutation

Variation between individuals exist within a given population. What are some of the environmental pressures involved in a population?

(select all that apply.)

• Extreme temperature changes

• Competition of resources

• Natural disasters

• Predator abundance

When new individuals join the population from a different gene pool or when some individuals leave a population, what is known as?

• Gene flow

• Genetic drift

• Genetic variation

• Adaptive value

The change in allele frequencies in a population due to random events is knows as...?

• Environmental pressures

• Gene flow

• Genetic drift

• Favourable phenotypes

What event can significantly reduce the size of the population and thus its genetic diversity?

(select all that apply)

• Natural disasters

• Individuals moving in and out

• Land clearing

• Inbreeding

If a small group of individuals move to a new location and establish a new population, this is known as...?

• Genetic drift

• Bottleneck effect

• Founder effect

• Random chance