Summary A Level Biology Notes - Populations and Evolution
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Course
Unit 2 BIOL2 - The variety of living organisms
Institution
AQA
Book
AQA Biology A Level Student Book
Complete AQA A Level Biology notes on populations and evolution with diagrams, definitions to support your understanding.
Details include:
Hardy-Weinberg
Variation in phenotype
Natural selection
Isolation and speciation
of interbreeding organisms of one species in a habitat
Population Group
AlleleFrequency Numberoftimes an allele occurs in agenepool
Genepool Allthe alleles of thegenes of all theindividuals in a population at agiven
time
Hardy Weinberg Principle
Assumptions
No mutation
Population is isolated noflowof allelesinto oroutof thepopulation
Noselection
largepopulation
Mating withinthepopulation is random
Probability of Allele A p
Pth I 5 Forallelefrequency
Probability of allele a q
There are 4 possible
ways ofarrangingthesealleles
AA t Aa T AA t aa
p t 2pqt g I 1Forgenotypes
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