Lecture 21

Question 1

What is the Hardy-Weinberg equation

Answer 1

p2 + 2pq = q2 = 1
genotypic frequency
p - dominant
q - reccesive

Question 2

What is random genetic drift

Answer 2

random changes in allele frequencies due to samplim

Question 3

What is the bottleneck effect

Answer 3

original populations - equal blue/white, some yellow
-bottleneck event - reduces population
-yellow allele lost white allele rare
reduces variation

Question 4

What is the Founders effect

Answer 4

loss of genetic variation from the establishment of a new population by a few individuals of a larger population

Question 5

what is sexual selection

Answer 5

alleles that are favoured and mated with

Question 6

What is frequency dependent selection

Answer 6

in some fish and other things maintains variation

a natural selection that maintains equal proportions of left and right individual in populations

Question 7

What is a cline

Answer 7

the gradual geographic change in the genetic/phenotypic composition