Lecture 2

Question 1

What are four mechanisms that shift allele frequencies in populations?

Answer 1

(1) natural Selection
(2) Genetic Drift
(3) Gene Flow (Migration)
(4) Mutations

Question 2

Gregor Mendel

Answer 2

• Variability exists and it is preserved from one generation to the next
• law of segregation
• independant assortment
• Confirmed how variation in populations is heritable: counter-intuitive result that requires population level thinking

Question 3

What is population genetics?

Answer 3

Merging of evolution and genetics to look at evolutionary change on the level of genes

Question 4

Population genetics definition of evolution

Answer 4

Any change in the genetic characteristics of a population over time, especially a change in allele frequencies

Question 5

What type of populations will be in HW equilibrium

Answer 5

Non-evolving populations

Question 6

Hardy Weinberg Principle

Answer 6

Allele and genotype frequencies in a large population do not change from generation to generation in the absence of evolutionary processes