Question

If at a locus, three alleles in a population, such that the A allele is present at frequency 0.2, and C allele at frequency 0.4, after one generation of random mating in a population of size 100, the total number of heterozygotes will be:

Select one:

a. 36

b. 64

c. 10

d. 12

e. 24

Answer #1

**ANSWER:**

Therefore, Number of heterozygotes = total frequency of heterozygotes * number of individuals in population= 0.64 * 100 = 64

Hence, the correct option is (b) i.e, 64.

A population at a bi-allelic locus has 23 A/A, 15 A/C, 12 C/C
individuals. After randomly mating, if in the next generation,
there are 100 individuals, the expected number of A alleles across
this population is:
Select one:
a. 122
b. 61
c. 39
d. 78
e. 100

Consider a single locus in a population with 4 alleles with
frequencies 0.4, 0.25, 0.15, 0.2.
The genotypes are in Hardy-Weinberg equilibrium. What is the
current heterozygosity in the
population? If the population size is 100, what will the
heterozygosity be after 10 generations?
If the generation time is 20 years, how long will it take for
the heterozygosity to be reduced by
half?

1. There are two alleles at a locus: A and P. Assume these two
alleles are in Hardy-Weinberg equilibrium. Assume also that Allele
P has a frequency of exactly 1% in the population. Given this
information, what is the frequency of AP heterozygotes in the
population?
2. You are studying an allele A that governs parasite resistance
in a large population of rabbits.
You observe that different combinations of A and a produce
phenotypes that have different fitnesses due to...

There are 5 alleles at the BXR008 locus. In a large sample from
the population from which the suspects come, the frequencies of the
alleles (starting from lowest to highest number of repeats)
are;0.1,0.2,0.5,0.15,0.05; construct a table to calculate the
matching probability and answer the following;
Number of repeats
Frequency
2
0.1
3
0.2
5
0.5
7
0.15
10
0.05
What is probability of the homozygous genotype consisting of the
least common allele for the BXR008 locus

Consider a racoon population that exhibits variation at the G
locus, which has two possible alleles: G1 and
G2. The population starts out at Hardy Weinberg
Equilibrium and the frequency of the G1 allele in the
original population is 0.3. The relative fitness of each genotype
during this generation is listed below. Use information to answer
the following questions.
w11 = 0.8
w12 = 1.0
w22 = 0.5
Calculate the average fitness for the population.
Calculate the genotype frequencies in...

There are three different alleles at the same locus that
contribute to blood type. A homozygote for AA will be type A, a
homozygote for BB will be type B, and a homozygote for ii will be
type O. Heterozygotes exist as well, where A is codominant with B
(producing type AB), and both A and B are dominant to i. In a
population, 4% are type O, and 1% of the individuals are homozygous
for type A. Fill in...

Let A and a be the alleles at a locus l in a population evolving
with inﬁnite, non-overlapping
generations. Assume that the probability an AA child survives to
reproductive maturity is
0.8; for genotype Aa assume this probability is 0.6 and for
genotype aa it is 0.7. Let fA(t)
denote the frequency of A among the newborns of generation t. The
population at birth in
generation 0 is in Hardy-Weinberg equilibrium with fA(0)
= 0.4.
(a) What is the probability...

1. If the frequencies of three alleles at a locus in a
population are A1= 0.5, A2= 0.45, and A3= 0.05 what is the expected
frequency of the A2A3 genotype? Show work that supports your
answer.
a. 0.0225 b. 0.05 c. 0.075. d. 0.045 e=0.5
2a. If a new mutant allele were to arise in a single individual
heterozygous for the mutation within a population of a diploid
species (Ne=300 individuals in the population) the probability that
the new mutant...

A mainland population of 1000 blue iguanas have the neutral
alleles A1 and A2 with frequencies of A1 = 0.50 and A2 = 0.50.
A new population of blue iguanas is founded on Lizard Island
with a population size of 10 males and 15 females.The neutral
alleles A1 and A2 are present in the population with frequencies of
A1 = 0.30 and A2 = 0.70. Migrants begin moving from the mainland to
Lizard Island at a rate of 1 migrant...

1) The rate at which genetic drift fixes and eliminates alleles
depends on what factor(s)?
Select one:
a. population size
b. intensity of non-random mating
c. initial allele frequencies
d. both A and C
2)
During a founder event, what process can dramatically shift
allele frequencies in the founder population away from the
frequencies in the source population?
Select one:
a. genetic drift
b. migration and gene flow
c. negative frequency dependent selection
d. linkage
3)
The loss of heterozygosity...

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