gene flow and genetic drift

Question 1

describe gene flow

Answer 1

• 2 populations of same species interbreed

- alleles qare shared changing allele freq’s of both

Question 2

describe genetic drift

Answer 2

• chance even occurs on pop
• effect on allele frequencies is unpredictable
• not likely to be genetically representative; loss ofgenetic diversity an perhaps entirle alleles ; increase likelihood of extinction

Question 3

describe founder effects and bottleneck

Answer 3

• founder: new colony established…

- bottleneck: reduced due to eath, natural disaster…