H-Evolution

"Survival of the Fittest" where the better adapted organisms survive to pass traits along to offspring.

• Evolution
• Natural Selection
• Extinction
• Artifical Selection

Why are advantageous traits more likely to be passed onto offspring?

• Because they are more likely to survive and reproduce.
• Because they come from dominant alleles.
• Because they come from recessive alleles.
• Because the trait is an acquired phenotype.

These structures with the same parts but different different functions suggest that organisms share a common ancestry.

• vestigial structures
• homologous structures
• adaptive radiation
• fossil

Study of embryos of various organisms to show a common ancestor because of similarities in development

• natural selection
• embryology
• speciation
• evolution

What type of structures are these?

• homologous
• vestigial 
• analogous
• fossil

Whales are aquatic mammals that contain a pelvis (hip) bone. Even though it does not aid in its movement, the function must have been used by a common ancestor of the whale. Thus, the pelvis is referred to as a(n)

• vestigial structure

• analogous structure

• homologous structure

Genetic differences between organisms of the same species

• Variation
• Adaptation
• Behavior
• Environment

This mode of selection is the result of extreme population phenotypes being favored by the environment.

• Disruptive Selection

• Directional Selection

• Stabilizing Selection

• All of the above

A population of salamanders, 50% of whom were spotted, decreased from 500 to only 100 in just a few months when a drought dried up much of the lake they inhabit. The remaining population had a much higher frequency of spotted than non-spotted salamanders compared with the original population. The most likely cause for this change is -- 

• Natural Selection

• Gene Flow

• Mutation

• Genetic Drift

Process by which closely related organisms develop differences due to living in different environments

• family descent

• survival of the fittest

• convergent evolution

• divergent evolution