Section 3: Shaping Evolutionary Theory

Section 3: Shaping Evolutionary Theory

By Aicelle Velasco

Multiple Choice

Which Hardy-Weinberg factor represents the frequency of heterozygous individuals in a population?

• p²

• 2pq

• q²

• p² + 2pq

Multiple Choice

What does the Hardy-Weinberg equilibrium measure?

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

Multiple Choice

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

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

Multiple Choice

Change in allele frequencies as a result of the migration of a small subgroup of a population

• speciation

• founder effect

• bottleneck effect

Multiple Choice

_______________ occurs when a population declines to a very small number then goes back up but results in a permanent loss of genetic diversity in the population (example: the Cheetah population)

• coevolution

• bottleneck

• archaeopteryz

• mutation

Multiple Choice

This mechanism of evolution occurs when populations migrate.

• Extinction
• Gene flow
• Genetic drift
• Natural Selection

Multiple Choice

Yellow toucan birds seek out one another to make babies together and tend to avoid the green toucan birds.

• Nonrandom mating
• gene flow
• mutation
• natural selection

Multiple Choice

This is the process that ultimately creates new variations and changes in DNA; leads to the creation of new alleles

• Mutation

• Microevolution

• Natural selection

• Gene flow / genetic drift

Multiple Choice

Which of the following is NOT an example of Prezygotic Reproductive Isolation?

• Geographic

• Behavioral

• Reduced Hybrid Viability

• Gametic

Multiple Choice

A new river forms and splits two populations, causing ______________ speciation

• Sympatric

• Allopatric

• Extreme

• Convergent

Multiple Choice

Orcas occur in the same habitat but some are avoiding each other and do not interbreed. They have different diets, vocal behavior, and social structures. What type of speciation is this?

• Allopatric

• Sympatric

• Complex

• Covergent

Multiple Choice

The three species pictured do not share a common ancestor, yet have evolved to have a similar anatomy and life style. This is an example of ?

• Homologous Structures

• Divergent Evolution

• Vestigial Organs

• Convergent Evolution

Multiple Choice

What type of evolution is demonstrated in this photo?  (Hint: the bee and the flower have evolved in response to each other)

• Coevolution
• Convergent evolution
• Punctuated evolution
• Gradualistic evolution