Evolution Test Review

Define ‘survival of the fittest’ as organisms that are best adapted to their environment survive and reproduce.

• The physically strongest survive

• Organism that are best adapted to their environment survive and reproduce

• Survival is completely random.

• Adaptation does not affect survival.

An individual’s traits are either beneficial or disadvantageous based on their _______________.

• environment

• attitudes

• experiences

• values

Mutations, migration (gene flow) & natural selection are important because they can bring out a source of ____________ ____________ (differences) in a species.

• physical strength

• environmental adaptation

• genetic variation

• behavioral uniformity

Could natural selection occur without competition for resources?

• YES

• NO

A population of brown and black lizards undergoes a mutation in a gene that determines body color producing a red colored lizard. What happens to the phenotype (color) and allele frequencies?

• All of the phenotype and allele frequencies increased.

• Only the red allele decreased in frequency. The brown and black increased in frequency

• The red and brown allele decreased in frequency and the black allele increased in frequency

• Neither phenotype nor allele frequencies change.

Which mutation that was NOT beneficial in the lizard’s environment.

• brown and black color mutation

• black color mutation

• black and red color mutation

• brown and red color mutation

Which mutation WAS beneficial in the lizard’s environment, and how do you know?

• red color mutation

• black color mutation

• brown color mutation

• no colors were beneficial

What body color will continue to increase in future generations?

• red

• black

• yellow

• brown

If a drastic change in the lizard’s environment causes brown skin color to be more beneficial in camouflaging from predators, then the frequency of brown skin color in the population will:

• Remain the same

• Decrease

• Increase

• Disappear

Are larger or smaller populations more beneficial for survival?

• Larger populations are more beneficial for survival because they provide more genetic diversity.

• Smaller populations are more beneficial because they reduce the spread of diseases.

• Both larger and smaller populations have equal survival benefits.

• None of these