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Biol 320 Final Exam Newest 2025/ 2026 Actual Exam
Complete Questions And Correct Answers || NEWEST
EXAM!!! (Verified Answers) |Already Graded A+||
UPDATED EXAM!!!
What are true of the process of retroposition and the
resulting duplicated genes? - ANSWER-Involves reverse
transcription of mRNA back into DNA.
Includes integration of reverse transcribed DNA back into
the genome.
Can often be recognized by the presence of region that
codes for a poly-A tail.
The term _______ refers to the physical manifestation of a
genotype. - ANSWER-phenotype
Given the genotype frequencies below, determine the
observed frequencies of the two alleles in the population
(p and q). Assume the population consists of 100
individuals, and that B = p and b = q.
Observed Genotype frequencies:
BB = 0.39
Bb = 0. 40
bb = 0.21 - ANSWER-Observed Allele frequencies:
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p = 0.59
q = 0.41
Using the observed allele frequencies you just calculated
above, determine the expected genotype frequencies in
the next generation (assuming no violations of the Hardy-
Weinberg principle). - ANSWER-BB = 0.35
Bb = 0.48
bb = 0.17
Is this population in Hardy-Weinberg equilibrium? -
ANSWER-No
One of the most important sources of new genes is likely
_______. The most common underlying mechanism for
this process is _______. - ANSWER-gene duplications /
unequal crossing-over
In a heterzygote advantage situation, a less fit or lethal
allele remains in the population at _______ than expected
frequencies. This is because the homozygous genotypes
both have _______ fitness than heterozygous genotype. -
ANSWER-higher
lower
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In a situation where frequency dependent selection is
occurring, the more rare a phenotype is in the population,
the _______ its relative fitness. Also, as the frequency of
the rare phenotype increases, its relative fitness _______.
Answer 1: - ANSWER-higher
decreases
When selection favors homozygous genotypes over
heterozygous genotypes (i.e., heterozygote
disadvantage)... - ANSWER-the most common allele will
typically become fixed (will increase to a frequency of 1.0)
in the population.
If migration proceeds unopposed by any other
evolutionary processes, the result will be - ANSWER-
homogenization of allele frequencies among the
populations involved
"If a population is not in Hardy-Weinberg equilibrium..."? -
ANSWER-the allele and/or genotype frequencies will
change from one generation to the next.
When selection favors heterozygous genotypes over
homozygous genotypes (i.e., heterozygote advantage)... -
Biol 320 Final Exam Newest 2025/ 2026 Actual Exam
Complete Questions And Correct Answers || NEWEST
EXAM!!! (Verified Answers) |Already Graded A+||
UPDATED EXAM!!!
What are true of the process of retroposition and the
resulting duplicated genes? - ANSWER-Involves reverse
transcription of mRNA back into DNA.
Includes integration of reverse transcribed DNA back into
the genome.
Can often be recognized by the presence of region that
codes for a poly-A tail.
The term _______ refers to the physical manifestation of a
genotype. - ANSWER-phenotype
Given the genotype frequencies below, determine the
observed frequencies of the two alleles in the population
(p and q). Assume the population consists of 100
individuals, and that B = p and b = q.
Observed Genotype frequencies:
BB = 0.39
Bb = 0. 40
bb = 0.21 - ANSWER-Observed Allele frequencies:
,2|Page
p = 0.59
q = 0.41
Using the observed allele frequencies you just calculated
above, determine the expected genotype frequencies in
the next generation (assuming no violations of the Hardy-
Weinberg principle). - ANSWER-BB = 0.35
Bb = 0.48
bb = 0.17
Is this population in Hardy-Weinberg equilibrium? -
ANSWER-No
One of the most important sources of new genes is likely
_______. The most common underlying mechanism for
this process is _______. - ANSWER-gene duplications /
unequal crossing-over
In a heterzygote advantage situation, a less fit or lethal
allele remains in the population at _______ than expected
frequencies. This is because the homozygous genotypes
both have _______ fitness than heterozygous genotype. -
ANSWER-higher
lower
, 3|Page
In a situation where frequency dependent selection is
occurring, the more rare a phenotype is in the population,
the _______ its relative fitness. Also, as the frequency of
the rare phenotype increases, its relative fitness _______.
Answer 1: - ANSWER-higher
decreases
When selection favors homozygous genotypes over
heterozygous genotypes (i.e., heterozygote
disadvantage)... - ANSWER-the most common allele will
typically become fixed (will increase to a frequency of 1.0)
in the population.
If migration proceeds unopposed by any other
evolutionary processes, the result will be - ANSWER-
homogenization of allele frequencies among the
populations involved
"If a population is not in Hardy-Weinberg equilibrium..."? -
ANSWER-the allele and/or genotype frequencies will
change from one generation to the next.
When selection favors heterozygous genotypes over
homozygous genotypes (i.e., heterozygote advantage)... -
