BSC 385 EXAM 2 questions well
answered
_____ looks for the likelihood that a genetic locus is associated with a given trait - correct
answer ✔✔QTL (quantitative trait locus)
_______ helps us understand relationships between markers and functional associations
looks at genetic markers and how likely they give phenotypes, predicts likelihood of disease risk
- correct answer ✔✔GWA (genomic wide association)
_________ _________ is competition-driven divergence of the niches of two competing
species. It is driven by ________ _______ of individuals with trait values that result in overlap
with those of individuals of another species - correct answer ✔✔character displacement; lower
fitness
how does GWA differ from QTL - correct answer ✔✔-GWA does not necessarily predict certain
phenotypes like QTL, it just says the likelihood
_________ _________ __________ is the proportion of genetic variance represented in its
entirety as a single value and not broken down into different components (all lumped into one
single number/value) - correct answer ✔✔broad sense heritability (H2)
_______ ________ _________ is the proportion of the total phenotypic variance of a trait
attributable to the interactive effects of alleles/additive effects
accurately reflects genetic variance - correct answer ✔✔narrow sense heritability (h2)
Broad sense heritability equation (H2) - correct answer ✔✔H2 = VG / VP = VG / (VG + VE)
, narrow sense heritability equation (h2) - correct answer ✔✔h^2 = VA/VP = VA/ (VG + VE) = VA/
(VA + VD + VI + VE)
what does:
VA=
VD=
VI=
VG=
VE= - correct answer ✔✔VA= additive genetic variance
VD= dominance effects of alleles on variance
VI= variance due to epistatic (interactions between different alleles) interactions among alleles
VG= variance due to genetic differences
VE= variance due to environmental differences
________ ________ ( ) is a measure of the strength of phenotypic selection.
Describes the difference between the mean of the reproducing members of a population that
contribute to offspring to the next generation and the mean of all members of a population -
correct answer ✔✔Selection differential (S)
evolutionary response of a population to selection is calculated by the _________ _______
The equation is: - correct answer ✔✔breeder's equation
R= h2 X S
what does the different variables in the breeder's equation mean?
R= h2 X S - correct answer ✔✔h2= the ability to transmit those phenotypic characteristics to
offspring
S= phenotypic variation that influences fitness
answered
_____ looks for the likelihood that a genetic locus is associated with a given trait - correct
answer ✔✔QTL (quantitative trait locus)
_______ helps us understand relationships between markers and functional associations
looks at genetic markers and how likely they give phenotypes, predicts likelihood of disease risk
- correct answer ✔✔GWA (genomic wide association)
_________ _________ is competition-driven divergence of the niches of two competing
species. It is driven by ________ _______ of individuals with trait values that result in overlap
with those of individuals of another species - correct answer ✔✔character displacement; lower
fitness
how does GWA differ from QTL - correct answer ✔✔-GWA does not necessarily predict certain
phenotypes like QTL, it just says the likelihood
_________ _________ __________ is the proportion of genetic variance represented in its
entirety as a single value and not broken down into different components (all lumped into one
single number/value) - correct answer ✔✔broad sense heritability (H2)
_______ ________ _________ is the proportion of the total phenotypic variance of a trait
attributable to the interactive effects of alleles/additive effects
accurately reflects genetic variance - correct answer ✔✔narrow sense heritability (h2)
Broad sense heritability equation (H2) - correct answer ✔✔H2 = VG / VP = VG / (VG + VE)
, narrow sense heritability equation (h2) - correct answer ✔✔h^2 = VA/VP = VA/ (VG + VE) = VA/
(VA + VD + VI + VE)
what does:
VA=
VD=
VI=
VG=
VE= - correct answer ✔✔VA= additive genetic variance
VD= dominance effects of alleles on variance
VI= variance due to epistatic (interactions between different alleles) interactions among alleles
VG= variance due to genetic differences
VE= variance due to environmental differences
________ ________ ( ) is a measure of the strength of phenotypic selection.
Describes the difference between the mean of the reproducing members of a population that
contribute to offspring to the next generation and the mean of all members of a population -
correct answer ✔✔Selection differential (S)
evolutionary response of a population to selection is calculated by the _________ _______
The equation is: - correct answer ✔✔breeder's equation
R= h2 X S
what does the different variables in the breeder's equation mean?
R= h2 X S - correct answer ✔✔h2= the ability to transmit those phenotypic characteristics to
offspring
S= phenotypic variation that influences fitness
