population genetics

Question 1

what do we normally mean by population?

Answer 1

all the organisms of the same species living in the same habitat

Question 2

`what does the hardy weinburg equation calculate

Answer 2

expected frequencies

Question 3

`state the equations used in the hardy weinburg equation

Answer 3

p + q = 1

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

Question 4

define the key used in the hardy weinburg equation

Answer 4

p=the frequency of dominant allele in the gene pool
q=the frequency of recessive allele in the gene pool n
p^2=the frequency of the homozygous dominant genotype
q^2=the frequency of homozygous recessive genotype
2pq=the frequency of heterozygous genotype

Question 5

what does the hardy weinburg equation state

Answer 5

the frequencies of the alleles of a particular gene in a populatoion will stayv constant from generatio to generation

Question 6

what conditions does the hardy weinburg equation need

Answer 6

• the population must be large
• mating between individuals must be random
• not mutations
• all genotypes must be equally likely to reproduce
• there must be no migration

Question 7

define the term gene pool

Answer 7

the genetic makeup of such population

all the alleles in a population at a particular time

Question 8

why is the hardy weinburg equation never really valid?

Answer 8

the conditions required are never really met in real situation

Question 9

what is genetic drift?

Answer 9

the idea that alllele frwuencies can change simply due to chance

Question 10

name reasons why genetic drift may occur

Answer 10

the founder effect and the genetic bottlenecks