ANSC 4395 Exam 2 Questions and
Answers Graded A+
started with Genes in a Population (p. 91)
In gene and genotypic frequencies, p + q must =
This is always true if there are only 2 possible alleles at a locus. - Correct answer-1
The relative frequency of a one locus genotype in a population - Correct answer-
genotypic frequency
Uppercase letters denote genotypic frequency
- P=
- H=
- Q=
These = 1 if there is 3 possible genotypes. - Correct answer-P= homozygous
dominant
H= heterozygous
Q= homozygous recessive
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, The relative frequency of an allele in a population; measure of how common an
allele is in relation to other alleles at that locus - Correct answer-gene frequency
What is the difference in genotype and gene + genotypic frequency? - Correct
answer-genotype describes trait in individual
gene/ genotypic freq. - describes trait in population
What factors affect gene and genotypic frequencies? - Correct answer-selection,
mutation, migration, genetic drift
Define population genetics. - Correct answer-the study of factors affecting gene
and genotypic frequencies in a population
The immediate effect of selection is to? - Correct answer-change gene frequencies
(genotypic freq. also change)
Selection for a particular allele could result in? - Correct answer-absence of any
other allele at that locus; this allele would be fixed or has reached fixation
Define fixation. - Correct answer-the point at which a particular allele becomes the
only allele at its locus in a population
Inbreeding increases the frequency of? - Correct answer-homozygous recessive
Define crossbreeding (outbreeding). It increases the frequency of ? - Correct
answer-mating unrelated individuals
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
Answers Graded A+
started with Genes in a Population (p. 91)
In gene and genotypic frequencies, p + q must =
This is always true if there are only 2 possible alleles at a locus. - Correct answer-1
The relative frequency of a one locus genotype in a population - Correct answer-
genotypic frequency
Uppercase letters denote genotypic frequency
- P=
- H=
- Q=
These = 1 if there is 3 possible genotypes. - Correct answer-P= homozygous
dominant
H= heterozygous
Q= homozygous recessive
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
, The relative frequency of an allele in a population; measure of how common an
allele is in relation to other alleles at that locus - Correct answer-gene frequency
What is the difference in genotype and gene + genotypic frequency? - Correct
answer-genotype describes trait in individual
gene/ genotypic freq. - describes trait in population
What factors affect gene and genotypic frequencies? - Correct answer-selection,
mutation, migration, genetic drift
Define population genetics. - Correct answer-the study of factors affecting gene
and genotypic frequencies in a population
The immediate effect of selection is to? - Correct answer-change gene frequencies
(genotypic freq. also change)
Selection for a particular allele could result in? - Correct answer-absence of any
other allele at that locus; this allele would be fixed or has reached fixation
Define fixation. - Correct answer-the point at which a particular allele becomes the
only allele at its locus in a population
Inbreeding increases the frequency of? - Correct answer-homozygous recessive
Define crossbreeding (outbreeding). It increases the frequency of ? - Correct
answer-mating unrelated individuals
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
