Hardy Weinberg

Front

What does the variable q represent in Hardy-Weinberg equilibrium?

Back

The frequency of the recessive allele.

Front

What is the Hardy-Weinberg equation that represents the genotype frequencies in a population?

Back

p² + 2pq + q² = 1.

Front

What do you call all of the genes in a population?

Back

Gene pool.

Front

If 98 out of 200 individuals in a population express the recessive phenotype, what percent of the population would you predict would be heterozygous?

Back

42%.

Front

In a population of 500 butterflies, if 200 are white (recessive), what is the frequency of homozygous dominant individuals?

Back

.16.

Front

What does the variable p represent in Hardy-Weinberg equilibrium?

Back

The frequency of the dominant allele.

Front

What is the significance of the Hardy-Weinberg principle?

Back

It provides a mathematical model to study genetic variation in a population.

Front

What are the five conditions for a population to be in Hardy-Weinberg equilibrium?

Back

1. No mutations, 2. Random mating, 3. No natural selection, 4. Extremely large population size, 5. No gene flow.

Front

How do you calculate allele frequency from genotype frequency?

Back

Add the frequencies of homozygous and half the frequency of heterozygotes.

Front

What is genetic drift?

Back

A change in allele frequencies due to random sampling of organisms.