Chi square and Hardy-Weinberg

Question 1

Mendels assumptions for hybrid cross ratios

Answer 1

-Each allele is dominant or recessive
-Segregation is unimpeded
-Independant assortment occurs
-Fertilisation is random

Question 2

Reject null hypthesis

Answer 2

Data does not fit mendelian ratios

Question 3

Fail to reject null hypthesis

Answer 3

Data fits mendelian ratios

Question 3

Limit chance deviation

Answer 3

Increase sample size

Question 3

Genotype causes

Answer 3

Different allele combinations

Question 4

How to work out population genetics

Answer 4

Calculate allele frequencies and genotype frequencies in gene pool

Question 5

what is pop genetics used for

Answer 5

Determine degree of genetic variation, genotyp distribution and genetic divergence

Question 6

Microevolution

Answer 6

Changes in allele frequency in a population that does not lead to the formation of a new species

Question 7

HArdy-weinberg law

Answer 7

Describes what happens to genotype and allele frequencies in an infinetly large, randomly mating pop that is not subject to evolutionary forces such as mutation, migration or selection

Question 8

Main rule HW

Answer 8

Frequencies of alleles remain constant from one generation to te next

Question 9

HW assumptions

Answer 9

-Individuals of all genotypes have equal rates of survival and reproduction success (no selection)
-No new alleles are created or converted from one allele into another by mutation
-Individuals do not migrate into or out of the pop
-The pop is infinitely large which results in sampling errors and other random effects being negligible
-Individuals in the pop mate randomly

Question 10

Consequences of HW

Answer 10

-Dominant traits do not necessarily increase over generations
-Genetic variability can be maintained in a pop since allele frequencies remain unchanged
-Knowing frequency of one genotype allows you to calculate all other genotypes at that locus