7.2 Populations

Question 1

define population

Answer 1

group of organisms of the same species occupying a particular space that can interbreed

Question 2

what is the gene pool

Answer 2

the total number of alleles present in the population

Question 3

what is the allelic frequency

Answer 3

the proportion of a certain allele in the gene pool relative to the other alleles for that gene

Question 4

what is the hardy-weinburg principle used for

Answer 4

to estimate the frequency of alleles in a population to see if any changes are occurring over time

Question 5

what does the hardy-weinburg principle state as long as the conditions are constant

Answer 5

that the allele frequency will not change from one generation to the next

Question 6

what are the 5 conditions for the hardy Weinberg principle

Answer 6

• No mutations occur
• No movement of alleles in or out of the population due to migration
• Population is suitably large
• there is no selectional advantage (all alleles have equal change of being inherited)
• Mating is random (all genotypes can breed with all others)

Question 7

What are the two equations

Answer 7

p + q = 1
p^2 + 2pq + q^2 =1

where p is the frequency of the dominant allele and q is the recessive