ANSC 4395- Final Exam –
Questions with Solutions
selection - -The practice of allowing certain individuals more opportunity to
reproduce than others
- true - -results of selection are predictable in magnitude and direction
- response to selection - -genetic change that occurs as a result to selection
- heritability, selection - -response is a function of ___________ and the
_________ differential
- selection differential - -the difference between the mean performance of
the selected individuals and the average of the entire heard
- false- negative - -if the goal to decrease the mean for a trait, then the
selection differential and the response will be positive.
- generation interval - -the length of time it takes to replace the members of
one generation of a herd.
- breeding value - -an individuals phenotype is the result of it's genetic
merit and the effect of the environment
- Estimated Breeding Value (EBV) - -estimated from an individuals
performance and the performance of it's relatives
- progeny, sibs, parents - -most common types of relatives used to calculate
EBV
- true - -addition of information from relatives will always increase
confidence in an estimate breeding value
- individual's own performance - -single most important piece of info for
estimating breeding valueb
- repeatability - -___________ is the association between successive records
on an individual.
- false- low - -increase is most pronounced when heritability and
repeatability are both high
Questions with Solutions
selection - -The practice of allowing certain individuals more opportunity to
reproduce than others
- true - -results of selection are predictable in magnitude and direction
- response to selection - -genetic change that occurs as a result to selection
- heritability, selection - -response is a function of ___________ and the
_________ differential
- selection differential - -the difference between the mean performance of
the selected individuals and the average of the entire heard
- false- negative - -if the goal to decrease the mean for a trait, then the
selection differential and the response will be positive.
- generation interval - -the length of time it takes to replace the members of
one generation of a herd.
- breeding value - -an individuals phenotype is the result of it's genetic
merit and the effect of the environment
- Estimated Breeding Value (EBV) - -estimated from an individuals
performance and the performance of it's relatives
- progeny, sibs, parents - -most common types of relatives used to calculate
EBV
- true - -addition of information from relatives will always increase
confidence in an estimate breeding value
- individual's own performance - -single most important piece of info for
estimating breeding valueb
- repeatability - -___________ is the association between successive records
on an individual.
- false- low - -increase is most pronounced when heritability and
repeatability are both high
