Evolution Review

Front

What are alleles?

Back

Different forms of the same trait.

Front

What is the Hardy-Weinberg equilibrium?

Back

A principle that describes the genetic variation of a population that is not evolving.

Front

How do you calculate the frequency of a recessive allele in a population?

Back

Use the formula p^2 + 2pq + q^2 = 1, where p is the frequency of the dominant allele and q is the frequency of the recessive allele.

Front

What is the percentage of heterozygous individuals in a population with a recessive allele frequency of 0.4?

Back

48 percent.

Front

What trait do only humans have according to the cladogram?

Back

Opposable thumbs.

Front

What is a mutation?

Back

A change in the DNA sequence that can lead to changes in traits.

Front

What happens to a beneficial mutation in a population?

Back

It increases the probability that the animal will reproduce.

Front

What is the dominant allele frequency if there are 194 green frogs and 37 brown frogs?

Back

0.6.

Front

What is natural selection?

Back

The process where organisms better adapted to their environment tend to survive and produce more offspring.

Front

What is genetic drift?

Back

A mechanism of evolution that refers to random changes in allele frequencies in a population.