phenotypes 1 1
critical value at St probability and I
degreeof freedom is 3.8 77.7 3.8
reject null hypothesis as difference is not
dueto chance
Genepool
ball of the alleles within a population
higher thegeneticdiversitylarger thegenepool
genepool getsbigger when organisms migrate into a population geneflow
Allelic frequency
prevalence of an allele in the population givenas a decimal or percentage
frequency of different alleles changes in response to changes in the
environment basis of evolution
Evolution
change in allele frequency over time
as organismsbecome more and more adaptedto their environment alleles
whichgive rise to favourablecharacteristics becomeincreasinglycommon in
the population
HardyWeinbergprinciple
used to calculate allele frequency
predicts that allele frequency will not change between generations
assumptions population is large
no immigration or emigration is occurring
mating is random
not new mutations arise
no natural selection has occurred
if allele frequencychanged fromone generationto the next within a large
population then we know that mutation migration non randommating or
natural selection has taken place
equations