AP Biology Unit 7 Test

Front

What is a gene pool?

Back

A gene pool is all of the alleles in a population.

Front

What traits in a population of African swallowtail butterflies are likely to die out?

Back

The medium/average trait.

Front

What are the differences among a species, such as different bird beaks, called?

Back

Variations.

Front

What is a situation that could cause evolutionary change that is NOT due to natural selection?

Back

A volcano erupts and kills many individuals in a population.

Front

Who proposed the concepts of Survival of the Fittest and Evolution?

Back

Charles Darwin.

Front

What is natural selection?

Back

Natural selection is the process where organisms better adapted to their environment tend to survive and produce more offspring.

Front

Define evolution.

Back

Evolution is the change in the heritable characteristics of biological populations over successive generations.

Front

What is genetic drift?

Back

Genetic drift is a mechanism of evolution that refers to random changes in allele frequencies in a population.

Front

What is the difference between a phenotype and a genotype?

Back

A phenotype is the observable physical or biochemical characteristics of an organism, while a genotype is the genetic constitution of an organism.

Front

What is speciation?

Back

Speciation is the evolutionary process by which populations evolve to become distinct species.