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Practice Exam 4 for General Genetics
Questions and Answers (100%
Correct Answers) Already Graded A+
Variance Ans: A statistical measure of the spread of the
distribution of values around the mean.
© 2026 Assignment
Phenotypic plasticity Ans: The ability of an organism to
change its phenotype in response to changes in the
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environment.
Expert
Incomplete penetrance Ans: A situation where individuals with
the same genotype might display different phenotypes.
Complementation test Ans: A test used to determine if two
mutants have mutations in the same gene or different genes.
Dihybrid test cross Ans: A genetic cross involving two traits
that can produce different proportions of recombinant
progeny types depending on linkage.
Epistasis Ans: A genetic interaction where one gene can mask
or modify the expression of another gene.
Genetic variation Ans: Differences in DNA sequences among
individuals.
Environmental variation Ans: Differences in phenotype caused
by environmental factors.
, 2
Pleiotropy Ans: A condition where a single gene affects
multiple distinct traits.
Heritability (h2) Ans: A measure of how much of the variation
in a trait can be attributed to genetic differences.
E gene in Labrador retrievers Ans: An epistatic gene that
determines coat color, where ee individuals are yellow
regardless of their B genotype.
© 2026 Assignment
B gene in Labrador retrievers Ans: A gene that specifies coat
color, with the dominant B allele resulting in black and the
recessive b allele resulting in brown.
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Expert
Recombinant progeny types Ans: Offspring that have different
combinations of alleles than those of their parents.
Linkage Ans: The tendency of genes located close to each
other on a chromosome to be inherited together.
Major variation Ans: Significant differences in traits that are
often genetically based.
Minor variation Ans: Small differences in traits that may arise
from environmental influences.
Broad-sense variation Ans: A measure of the total genetic
variance in a trait.
Narrow-sense variation Ans: A measure of the additive genetic
variance that contributes to the resemblance between parents
and offspring.
Practice Exam 4 for General Genetics
Questions and Answers (100%
Correct Answers) Already Graded A+
Variance Ans: A statistical measure of the spread of the
distribution of values around the mean.
© 2026 Assignment
Phenotypic plasticity Ans: The ability of an organism to
change its phenotype in response to changes in the
Guru01 - Stuvia
environment.
Expert
Incomplete penetrance Ans: A situation where individuals with
the same genotype might display different phenotypes.
Complementation test Ans: A test used to determine if two
mutants have mutations in the same gene or different genes.
Dihybrid test cross Ans: A genetic cross involving two traits
that can produce different proportions of recombinant
progeny types depending on linkage.
Epistasis Ans: A genetic interaction where one gene can mask
or modify the expression of another gene.
Genetic variation Ans: Differences in DNA sequences among
individuals.
Environmental variation Ans: Differences in phenotype caused
by environmental factors.
, 2
Pleiotropy Ans: A condition where a single gene affects
multiple distinct traits.
Heritability (h2) Ans: A measure of how much of the variation
in a trait can be attributed to genetic differences.
E gene in Labrador retrievers Ans: An epistatic gene that
determines coat color, where ee individuals are yellow
regardless of their B genotype.
© 2026 Assignment
B gene in Labrador retrievers Ans: A gene that specifies coat
color, with the dominant B allele resulting in black and the
recessive b allele resulting in brown.
Guru01 - Stuvia
Expert
Recombinant progeny types Ans: Offspring that have different
combinations of alleles than those of their parents.
Linkage Ans: The tendency of genes located close to each
other on a chromosome to be inherited together.
Major variation Ans: Significant differences in traits that are
often genetically based.
Minor variation Ans: Small differences in traits that may arise
from environmental influences.
Broad-sense variation Ans: A measure of the total genetic
variance in a trait.
Narrow-sense variation Ans: A measure of the additive genetic
variance that contributes to the resemblance between parents
and offspring.
