ANSC 340 COMPREHENSIVE TEST SCRIPT
2026 SOLUTIONS VERIFIED
◉ high heritability means that ____ have a large influence on _____
Answer: BV; Phenotypic value
◉ Perfomance can predict ____ Answer: BV
◉ BV can predict ____ Answer: performance
◉ T/F: heredity is denoted as "h" but is often squared to "h^2" for
calculations Answer: False, heritability is denoted as "h^2"
◉ T/F: h^2 = (the correlation between phenotype and BV)^2
Answer: True; heritability = r^2 of p,BV
◉ h^2 will range from.... Answer: 0 to 1
◉ _____ the proportion of differences in performance for a trait that
are attributable to differences in breeding value for the trait Answer:
heritability
,◉ ____ in performance are whats heritable Answer: differences
◉ heritability refers to a ____, not an ____ Answer: trait, individual
◉ heritability of a trait ____ through populations, management
schemes, and environments Answer: varies
◉ _____ h^2 is for reproductive traits Answer: low
◉ lower h^2, ____ impact BV has Answer: lower
◉ if we know nothing of genotypes, and we must select solely on
phenotype, then.... Answer: heritability becomes an issue
◉ if the heritability of that trait is low, then breeding based on
phenotype will _____ Answer: NOT be efficient
◉ can improve traits with ___h^2 through management Answer: low
◉ _____: the strength of the relationship between repeated records
for a trait in a population Answer: repeatability
, ◉ what are some examples of repeated traits? Answer: milk-related,
litter size, show performance, and fleece weight
◉ when r is high, the first record of an animal ___ a good indicator of
that animals next record Answer: IS
◉ when r is low, the first record ____ a good predictor of future
records Answer: is NOT
◉ ____ is the strength of the relationship between single phenotypic
values and producing abilities for a trait Answer: repeatability
◉ repeatability refers to a ____, not an ___ Answer: population,
individual
◉ T/F: repeatability is fixed Answer: FALSE; repeatability can vary
from population to population and environment to environment
◉ T/F: repeatability = the regression pf PA on P Answer: True: r = b
PA,P
◉ repeatability is the correlations of ___ and ___ Answer: 1st
phenotype to the 2nd phenotype; and the phenotype to the
producing ability
2026 SOLUTIONS VERIFIED
◉ high heritability means that ____ have a large influence on _____
Answer: BV; Phenotypic value
◉ Perfomance can predict ____ Answer: BV
◉ BV can predict ____ Answer: performance
◉ T/F: heredity is denoted as "h" but is often squared to "h^2" for
calculations Answer: False, heritability is denoted as "h^2"
◉ T/F: h^2 = (the correlation between phenotype and BV)^2
Answer: True; heritability = r^2 of p,BV
◉ h^2 will range from.... Answer: 0 to 1
◉ _____ the proportion of differences in performance for a trait that
are attributable to differences in breeding value for the trait Answer:
heritability
,◉ ____ in performance are whats heritable Answer: differences
◉ heritability refers to a ____, not an ____ Answer: trait, individual
◉ heritability of a trait ____ through populations, management
schemes, and environments Answer: varies
◉ _____ h^2 is for reproductive traits Answer: low
◉ lower h^2, ____ impact BV has Answer: lower
◉ if we know nothing of genotypes, and we must select solely on
phenotype, then.... Answer: heritability becomes an issue
◉ if the heritability of that trait is low, then breeding based on
phenotype will _____ Answer: NOT be efficient
◉ can improve traits with ___h^2 through management Answer: low
◉ _____: the strength of the relationship between repeated records
for a trait in a population Answer: repeatability
, ◉ what are some examples of repeated traits? Answer: milk-related,
litter size, show performance, and fleece weight
◉ when r is high, the first record of an animal ___ a good indicator of
that animals next record Answer: IS
◉ when r is low, the first record ____ a good predictor of future
records Answer: is NOT
◉ ____ is the strength of the relationship between single phenotypic
values and producing abilities for a trait Answer: repeatability
◉ repeatability refers to a ____, not an ___ Answer: population,
individual
◉ T/F: repeatability is fixed Answer: FALSE; repeatability can vary
from population to population and environment to environment
◉ T/F: repeatability = the regression pf PA on P Answer: True: r = b
PA,P
◉ repeatability is the correlations of ___ and ___ Answer: 1st
phenotype to the 2nd phenotype; and the phenotype to the
producing ability
