Lecture 4: Hardy-Weinberg Equilibrium Flashcards
Alleles
versions of genes
Genotypes
combinations of alleles possessed by individiuals
Phenotypes
observable traits
Evolution
Changes in allele frequency over time
Hardy Weinberg Equilibrium
Allele frequency are not expected to change over time (AKA EVOLUTION DOESNT OCCUR) when certain conditions hold
5 Assumptions of the Hardy Weinberg Equilibrium
- Random mating
- No natural selection
- No genetic drift
- No gene flow
- No mutation
Think in terms of genes rather than traits
Gene Pool
Rather than thinkingabout about individuals mating with each other, they instead pretended that individuals relase gametes (egg and sperm) into a vast pool;
THEREFORE they assumed the** gametes reflect the allele frequencies of the parents**
Why is the gene pool helpful?
It helps us to see what happens in the next generation with random matinfg
According to Gaut:
A1: (blank), (blank)
A2: (blank), (blank)
A1: A, p
A2: a, q
What makes the Hardy Weinberg an Equilbrium
The allele frequeuncy did not change from the first generation to the next