Weekly Quiz #14: The Five Fingers of Evolution

What is a gene pool?

• a place where genes can swim
• change in a species
• all the genes in a population
• the opposite of natural selection

What is non-random mating?

• proof of common ancestry
• when things don't go well on a date
• randomly mating with others
• choosing who you mate with

Which mechanism shows genes leaving (immigration) or coming into (emigration) a gene pool?

• mutations
• natural selection
• gene flow
• non-random mating

Individuals undergo evolution.

• True

• False

Genetic drift is change in the allele frequency of a population due to...

• random chance
• natural selection
• non-random mating (sexual selection)
• artificial selection

How does a species change over time?

• by adapting to the environment

• changes in the gene frequencies in a population

• acquiring new traits

• they do not change

Many different groups of organisms have wings, even though they do not share a recent common ancestor. This is because they evolved in environments with similar selective pressures. Wings are an example of a(n) ______________ structure.

• vestigial

• analogous

• homologous

A flood drowns a large portion of an insect population, with only a few random individuals surviving. This is an example of ______.

• genetic drift

• adaptation

• natural selection

Below are the % similarities of DNA between whales and other species. Based on this, which are whales most closely related to?

• Pig, 68.4%

• Hippo, 83.4%

• Mouse, 38.4%

What does the Hardy-Weinberg equilibrium measure?

• changes in allele frequencies
• numbers of mutations
• goodness of fit
• genetic diversity