M2 popl'n genetics note.Queens University BCHM 370
M2 Population Genetics
SEC 1 Introduction to Population Genetics
Population’s Gene Pool – understand population genetics and impact of diff F of evolution
Evolution – The accumulation of inherited traits within populations Changes over time by
natural selection.
Population Genetics – Study of the Frequency and Distribution of g
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M2 popl'n genetics note.Queens University BCHM 370
M2 Population Genetics
SEC 1 Introduction to Population Genetics
Population’s Gene Pool – understand population genetics and impact of diff F of evolution
Evolution – The accumulation of inherited traits within populations Changes over time by
natural selection.
Population Genetics – Study of the Frequency and Distribution of genetic variations/alleles
within a population https://www.youtube.com/watch?v=oKDXp7_v7Gk
- Global Pattern: for mitochondrial DNA/sex chrom/autosomes
1. The genetic diversity for humans is smaller than expected for a species with 7 biln
members
2. Alleles – genetic types specifically: If an allele is common in one popl’n, then it’s
typically common everywhere in the world
3. Genetic variation of people of sub-Saharan Africa is largely a subset of the variation you
see within sub-Saharan Africa
- Common Alleles = Alleles that are at least found in 5% of the population
If an Ale is common in a popl’n , then it’s typically common everywhere in the world
If an ale is only found in one region, then very few people in the region have that variant
o Nucleotide diversity of human popl’n is not the same across the globe
o Greater nucleotide diversity in Africa
Randomly 2 people from Africa are more diff than one from Africa and
one from ex. Europe
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