2. hardy Weinberg equation

Question 1

define alley frequency

Answer 1

proportion of a allele in gene pool

Question 2

define genotype

Answer 2

proportion of each genotype (x1x1,x2x2,etc) in the population

Question 3

we learned that if allele or genotype frequnecy is occurring this means

Answer 3

evolution is occurring

Question 4

allele frequency equation is .

Answer 4

of copies of the allele in the population / total # of all alleles in the population

Question 5

many forms of alleles is called

Answer 5

polymorphic

Question 6

name 3 genotypes

Answer 6

AA(homo domo) , Aa(hetero) , aa (homo recessive)

Question 7

give equation for frequency of allele A

Answer 7

2N AA = N Aa / 2N

Question 8

give equation for frequency of allele a

Answer 8

2N aa + N Aa / 2N

Question 9

if there is only 1 allele its freuqunecy willl always be?

Answer 9

1 therefore it is fixed and the population is monomporphoc

Question 10

p =

Answer 10

frequency of allele A

Question 11

q =

Answer 11

frequency of alllele a

Question 12

genetic structure of a population =

Answer 12

allele and genotype freuqndcy

Question 13

hardy Weinberg equilibrium means?

Answer 13

condition where allele frequency DOES NOT change so evolution does NOT occur

Question 14

what are the condones that use be met for hard Weinberg equilibrium (5)

Answer 14

1. random mating 2. population size is infinite (genetic drift happens in small populations) 3. no mutation 4. no gene flow 5. no natural selection

Question 15

if all these condones (5) are hold then the allele frequencies will?

Answer 15

remain constant

Question 16

what is the 2nd hardy weignbery problem

Answer 16

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

Question 17

after 1 gen. of random mating the allele frequencies are ______ and the genotype freuqncies ……

Answer 17

unchanged
return to hard weignberg expectations

Question 18

why is it important when no expectation is happening?

Answer 18

use full to predict genotype frequencies from allele freuqncies

Question 19

PRACTICE : within a population of butterflies the color brown (B) is dominant over the color white (b) and 40% of all butterflies are white. Given the simple information calculate the following:
1. the % of butterflies in the population that are heterozygous
2. the frequency of homozygous dominant individuals

Answer 19

hehe look at the back of the lesson for math
1. 46.5%
2. 0.135