Hardy-Weinberg Principle

Front 1

What is the Hardy- Weinberg principle?

Back 1

Predicts that the frequencies of alleles in a population won’t change from one generation to the next, provided certain conditions are met.

Front 2

What are the conditions that the Hardy-Weinberg principle is true under?

Back 2

• large population

• mating is random

• how no immigration or emigration

• no mutations

• no natural selection

Front 3

You use the H-W equations to find that the allele frequency for a population has changed from one generation to the next.

What can you conclude about the population?

Back 3

• The Hardy-Weinberg principle doesn’t apply for that population

• one or more of the factors (natural selection, immigration) must be affecting allele frequency - e.g. natural selection occurred

Front 4

For a gene:

p + q < 1

What does this mean?

Back 4

There are more than 2 alleles for this gene.

Front 5

p + q > 1

What does this mean?

Back 5

These alleles are not alleles for the same gene.

Front 6

The hardy-weinberg equations are designed to be used where a gene has 2 alleles.

Back 6

-

Front 7

Define - gene pool?

Back 7

The complete range of alleles present in a population