Hardy Weinberg

Question 1

what is a population?

Answer 1

-a group of individuals of the same species which can interbreed in a given area

Question 2

what does gene pool mean?

Answer 2

-all the alleles in a population of organisms

Question 3

what does allele frequency mean?

Answer 3

-the number of times an allele for a characteristic occurs compared to the total number of alleles for that characteristic

Question 4

if the phenotype is unchanging for a group of organisms what does it mean for the number of different alleles? what if it is changing?

Answer 4

-small amount of different alleles
-large amount of different alleles

Question 5

what is the Hardy Weinberg equation?

Answer 5

-p2+2pq+q2=1

Question 6

in the Hardy Weinberg equation what does the p, q and pq represent?

Answer 6

-p= homozygous dominant
-q= homozygous recessive
-pq= heterozygous

Question 7

what is the equation which calculates all the homozygous alleles in a population?

Answer 7

-p+q=1

Question 8

what are the 4 conditions which must be present to ensure that the frequency of alleles stays the same?

Answer 8

-population is large
-no migration or emigration
-fertilisation is random
-mutations don’t occur

Question 9

what is the Hardy Weinberg equation used to prove?

Answer 9

-that the frequency of alleles in a population does not change

Question 10

what is the process of using the Hardy Weinberg equation?

Answer 10

-work out the frequency of the homozygous recessive allele first- q2
-then find the frequency of the dominant- p2
-insert the values into the equation and work out the heterozygous frequency
-make sure all the values add up to 1

Question 11

do practice q on Hardy Weinberg

Answer 11

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