23.1, 23.2- Jan 24

Question 1

define genetic drift

Answer 1

causes allele frequencies to change randomly

Question 2

define gene flow

Answer 2

occurs when individuals leave one population, join another and breed

Question 3

define mutation

Answer 3

modifies allele frequencies by continually introducing new alleles

Question 4

two fundamental messages in evolutionary processes

Answer 4

1. natural selection is not the only process responsible for evolution
2. each of four processes has different consequences for genetic variation and fitness

Question 5

what is the modern synthesis

Answer 5

era in the early 1900s where evolutionary biologists, mathematicians and geneticists collaborated to quantify evolution

Question 6

what was the product of the modern synthesis era

Answer 6

hardy weinberg principle

Question 7

what did hardy and weinberg want to know

Answer 7

what would happen in an entire population when all individuals bred

Question 8

what type of thinking did darwin and hardy and weignberg engage in

Answer 8

population thinking

Question 9

define gene pool

Answer 9

all the alleles from all gametes in each generation go into single group

Question 10

what did weignberg calculate

Answer 10

predict the genotype and population produced
- frequency of each genotype

Question 11

what does p in the equation represent

Answer 11

A1

Question 12

what does p in equation represent

Answer 12

A2

Question 13

what must the sum of p and q equal and why

Answer 13

1 for 100 of population%

Question 14

hardy-weignberg equation

Answer 14

p^2+ 2pq+ q^2= 1

Question 15

what did the equation claim about the frequencies

Answer 15

the allele frequencies do not change

Question 16

what are the 5 important assumptions of the hardy weinberg principles

Answer 16

1. no natural selection at the gene in question
2. no genetic drift affecting the gene in question
3. no gene flow
4. no mutation
5. random mating with respect to the gene in question

Question 17

define no natural selection at the gene in question

Answer 17

all members of parental generation contribute equal gametes

Question 18

define no genetic drift

Answer 18

alleles not picked by chance because popl’n is large

Question 19

define no gene flow

Answer 19

no new alleles are added by immigration or lost through emigration

Question 20

define no mutation

Answer 20

no new alleles introduced to gene pool