Lecture 21 - population genetics and natural selection Flashcards
1
Q
What is the Hardy-Weinberg equation.
A
p2 + 2pq + q2 = 1
predicts genotypes in a population
2
Q
State what the terms directional selection and disruptive selection mean.
A
directional: changes the mean value towards one extreme
disruptive: favours the 2 extremes producing 2 peaks
3
Q
Define the term cline.
A
gradual geographic change in genetic/phenotypic composition
natural selection across the border and change in phenotypes over space
