Hardy-Weinberg Principle–the Gene Pool

Question 1

Population

Answer 1

organisms of a particular species in a particular place at a particular time

Question 2

Frequency

Answer 2

number/total
measured by dividing the number of a particular subgroup by the total group

Question 3

Gene pool is described in 3 ways:

Answer 3

by its genotype frequencies
by its phenotype frequencies
by its allele frequencies

Question 4

Hardy-Weinberg Equillibrium

Answer 4

a principle that states that allele frequencies in a population will remain the same over time as long as the population is large, there is no gene flow, natural selection is not occurring, and there is no change, it indicates that microevolution is occurring in the population

Question 5

Gene flow

Answer 5

movement of alleles into or out of a population by immigration or emigration

Question 6

Natural selection

Answer 6

the process by which organisms with heritable traits survive in a particular environment, passing on their successful traits to the next generation. Those selected have greater reproductive fitness that either increases fertility or decreases mortality.

Question 7

Microevolution

Answer 7

a change in the frequency of alleles in the gene pool that results in a change in the characteristics of the population; does not result in a new species

Question 8

Conditions needed for Hardy-Weinberg equilibrium

Answer 8

a closed population
a large poplation
no net change in mutation rate
random mating
no natural selection

Question 9

Conditions for evolution

Answer 9

an open population (gene flow)
a small population (genetic drift)
change in mutation rate
non-random mating
natural selection