Question 1

The coefficient of inbreeding quantifies the probability that two alleles in a homozygous individual are ___________, having descended from the same copy of the allele carried by a common ancestor of the inbred individual.

Accepted Answer

The answer of The coefficient of inbreeding quantifies the probability...

Question 2

_________is an evolutionary mechanism that favors the reproductive success of certain members of a population over others as a result of differences in anatomical, physiological, or behavioral traits they possess.

Accepted Answer

The answer of _________is an evolutionary mechanism that favors the...

Question 3

Draw a pedigree for an inbreeding coefficient of F= 2(1/2)⁴.

Accepted Answer

The answer of Draw a pedigree for an inbreeding coefficient...

Question 4

In an island population, the frequencies of the three MN blood types are given here:
M: 550
MN: 725
N: 225
a. Calculate the allele frequency of M and N.
b. Assuming random mating, what are the expected frequencies for each blood type?
c. Use chi- square analysis to test your hypothesis that mating is random for this population.

Accepted Answer

The answer of In an island population, the frequencies of...

Question 5

What type of geographic separation resulted in diversification of an ancestral species of ground squirrel into two species, Ammospermophilus leucurus, found on the north rim of the Grand Canyon, and members of the Ammospermophilus harrisii on the south rim of the canyon?

Accepted Answer

The answer of What type of geographic separation resulted in...

Question 6

What are the three key elements for determining F, a measure that a particular allele is IBD, using pedigree analysis?

Accepted Answer

The answer of What are the three key elements for...

Question 7

Explain why rare recessive alleles are more likely to produce a recessive phenotype as a result of inbreeding.

Accepted Answer

The answer of Explain why rare recessive alleles are more...

Question 8

In the pattern of natural selection called _________the favored phenotype has a homozygous genotype, while the consequence of natural selection favoring the heterozygote is a balanced polymorphism.

Accepted Answer

The answer of In the pattern of natural selection called...

Question 9

Inbreeding depression, the reduction in fitness of inbred organisms, often results from the reduced level of what (within the gene pool)?

Accepted Answer

The answer of Inbreeding depression, the reduction in fitness of...

Question 10

Burkitt's lymphoma is a cancer of the lymphatic system that is more common in individuals who are homozygous þAþA that succumb more easily to malaria. þSþS individuals suffer from anemia. þAþS have the highest relative fitness. Resistance to malaria and Burkitt's lymphoma are both an example of __________advantage.

Accepted Answer

The answer of Burkitt's lymphoma is a cancer of the...

Question 11

In the general population, 1 in 300 individuals is a carrier for Tay- Sachs disease, while 1 in 30 individuals of Ashkenazi Jew descent are carriers. Tay- Sachs also affects 1 in 30 individuals with French- Canadian ancestry, although two completely unique mutations are responsible for the Ashkenazi and French- Canadian mutations.
What are the chances of two individuals who are carriers having a child with Tay- Sachs if
a. both individuals are not of Ashkenazi or French- Canadian descent?
b. one individual is of Ashkenazi descent and the other is from the general population?
c. both individuals are of Ashkenazi descent?

Accepted Answer

The answer of In the general population, 1 in 300...

Question 12

Using the allele frequencies in the table below, what is the probability that a random person would be heterozygous 12/14 for VAW?
 $\text { Allele Frequencies for Three STRP Loci Used in CODIS }$

$\begin{array}{cccccc}
D8531S3&&VAW&&FAG\
\text { Allele } & \text { Frequency } & \text { Allele } & \text { Frequency } & \text { Allele } & \text { Frequency } \
\hline 12 & 0.015 & 12 & 0.015 & 18 & 0.015 \
\hline 13 & 0.015 & 14 & 0.131 & 19 & 0.061 \
\hline 14 & 0.134 & 15 & 0.119 & 20 & 0.125 \
\hline 15 & 0.270 & 16 & 0.186 & 21 & 0.180 \
\hline 16 & 0.229 & 17 & 0.257 & 22 & 0.209 \
\hline 17 & 0.162 & 19 & 0.189 & 23 & 0.131 \
\hline 18 & 0.162 & 0.015 & 0.088 & 24 & 0.146 \
\hline 19 & & 0.015 & 25 & 0.094 \
\hline & & & 26 & 0.018 \
\hline
\end{array}$

Accepted Answer

The answer of Using the allele frequencies in the table...

Question 13

The pattern of species evolution known as ___________is one of branching in which an ancestral species gives rise to two or more new species.

Accepted Answer

The answer of The pattern of species evolution known as...

Question 14

Using the allele frequencies in the table below, what is the probability that a random person is heterozygous 12/14 for VAW and homozygous 18/18 for FAG? (Assume that the two loci are unlinked.)
 $\text { Allele Frequencies for Three STRP Loci Used in CODIS }$

$\begin{array}{cccccc}
D8531S3&&VAW&&FAG\
\text { Allele } & \text { Frequency } & \text { Allele } & \text { Frequency } & \text { Allele } & \text { Frequency } \
\hline 12 & 0.015 & 12 & 0.015 & 18 & 0.015 \
\hline 13 & 0.015 & 14 & 0.131 & 19 & 0.061 \
\hline 14 & 0.134 & 15 & 0.119 & 20 & 0.125 \
\hline 15 & 0.270 & 16 & 0.186 & 21 & 0.180 \
\hline 16 & 0.229 & 17 & 0.257 & 22 & 0.209 \
\hline 17 & 0.162 & 19 & 0.189 & 23 & 0.131 \
\hline 18 & 0.162 & 0.015 & 0.088 & 24 & 0.146 \
\hline 19 & & 0.015 & 25 & 0.094 \
\hline & & & 26 & 0.018 \
\hline
\end{array}$

Accepted Answer