BIO 340 Holechek Exam Two Questions With Complete
Solutions
.01 Correct Answers One centiMorgan is equivalent to a
crossover frequency of
.02 Correct Answers The distance between C and A is 10
centimorgan. The distance between A and B is 20 centimorgan,
what is the expected frequency of double crossover progeny?
.3 Correct Answers You have determined you have a total of
30 "A" alleles in your gene pool. This gene pool has 50
organisms within it. What is the p frequency within this
population.
.25 Correct Answers Let's say you have 100 offspring
organisms. 25 of these bad boys and girls are not like either of
their parents in terms of color. In the context of organism color
what is the recombination frequency?
0 Correct Answers A species has n=4 c
hromosomes. Genes on the same
chromosome have a minimum
recombination recombination rate of ____%
0 Correct Answers Two-strand double crossover will produce
what percentage of recombinants?
0.00001 Correct Answers In a population of 50,000 diploid
individuals, what is the probability that a new neutral mutation
will ultimately reach fixation?
,0.19 Correct Answers ................AA/ Aa /aa
Pop. 1: 0.81 /0.18 /0.01
Pop 2: 0.25 /0.50 /0.25
Calculate the Fixation index in the Subpopulation relative to the
Total population based on the information provided.
0.54 Correct Answers The relative fitness values of three
genotypes are: wAA = 1.0, wAa = 1.0, and waa = 0.7. If the
population starts at the allele frequency p = 0.5, what is the
value of p in the next generation?
0.99999 Correct Answers n a population of 50,000 diploid
individuals, what is the probability that a new neutral mutation
will ultimately be lost from the population?
0% Correct Answers A species has n=4 chromosomes. Genes
on the same chromosome have a minimum recombination
recombination rate of:
1 Correct Answers p+q=?
1:1:1:1 Correct Answers What is our null hypothesis for
genotype ratios?
(Gg Ww x gg ww)
1:2:0 Correct Answers In a mating between two individuals
that are heterozygous for a recessive lethal allele that is
, expressed in utero, what genotypic ratio (homozygous
dominant:heterozygous:homozygous recessive) would you
expect to observe in the offspring?
3/16 Correct Answers ***Exam Question*** Wild type blue-
eyed Mary has blue flowers. Two genes control the pathway that
makes the blue pigment: The product of gene W turns a white
precursor into magenta pigment. The product of gene M turns
the magenta pigment into blue pigment. Each gene has a
recessive loss-of-function allele: w and m, respectively. A
dihybrid (WwMm) is self-pollinated. What proportion of the
offspring will be magenta?
4.7 Correct Answers Bristle number: Number of individuals:
11
24
37
4 31
5 56
6 17
74
The table shows the distribution of the number of bristles in a
Drosophila population indicating how many individuals in the
population have those particular number of bristles. Calculate
the mean number of bristles in the entire population.
5 Correct Answers What is the significant percentage ratio in
terms of determining whether or not the null hypothesis has been
broke.
Solutions
.01 Correct Answers One centiMorgan is equivalent to a
crossover frequency of
.02 Correct Answers The distance between C and A is 10
centimorgan. The distance between A and B is 20 centimorgan,
what is the expected frequency of double crossover progeny?
.3 Correct Answers You have determined you have a total of
30 "A" alleles in your gene pool. This gene pool has 50
organisms within it. What is the p frequency within this
population.
.25 Correct Answers Let's say you have 100 offspring
organisms. 25 of these bad boys and girls are not like either of
their parents in terms of color. In the context of organism color
what is the recombination frequency?
0 Correct Answers A species has n=4 c
hromosomes. Genes on the same
chromosome have a minimum
recombination recombination rate of ____%
0 Correct Answers Two-strand double crossover will produce
what percentage of recombinants?
0.00001 Correct Answers In a population of 50,000 diploid
individuals, what is the probability that a new neutral mutation
will ultimately reach fixation?
,0.19 Correct Answers ................AA/ Aa /aa
Pop. 1: 0.81 /0.18 /0.01
Pop 2: 0.25 /0.50 /0.25
Calculate the Fixation index in the Subpopulation relative to the
Total population based on the information provided.
0.54 Correct Answers The relative fitness values of three
genotypes are: wAA = 1.0, wAa = 1.0, and waa = 0.7. If the
population starts at the allele frequency p = 0.5, what is the
value of p in the next generation?
0.99999 Correct Answers n a population of 50,000 diploid
individuals, what is the probability that a new neutral mutation
will ultimately be lost from the population?
0% Correct Answers A species has n=4 chromosomes. Genes
on the same chromosome have a minimum recombination
recombination rate of:
1 Correct Answers p+q=?
1:1:1:1 Correct Answers What is our null hypothesis for
genotype ratios?
(Gg Ww x gg ww)
1:2:0 Correct Answers In a mating between two individuals
that are heterozygous for a recessive lethal allele that is
, expressed in utero, what genotypic ratio (homozygous
dominant:heterozygous:homozygous recessive) would you
expect to observe in the offspring?
3/16 Correct Answers ***Exam Question*** Wild type blue-
eyed Mary has blue flowers. Two genes control the pathway that
makes the blue pigment: The product of gene W turns a white
precursor into magenta pigment. The product of gene M turns
the magenta pigment into blue pigment. Each gene has a
recessive loss-of-function allele: w and m, respectively. A
dihybrid (WwMm) is self-pollinated. What proportion of the
offspring will be magenta?
4.7 Correct Answers Bristle number: Number of individuals:
11
24
37
4 31
5 56
6 17
74
The table shows the distribution of the number of bristles in a
Drosophila population indicating how many individuals in the
population have those particular number of bristles. Calculate
the mean number of bristles in the entire population.
5 Correct Answers What is the significant percentage ratio in
terms of determining whether or not the null hypothesis has been
broke.
