ANSC 4395 exam 4 Material QUESTIONS AND ANSWERS 100% CORRECT
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Course
ANSC 4395
Institution
Western Governors University
Breeding Value Correct Answer: - genetic merit
An individual receives how much of its genetic makeup from each parent? Correct Answer: half
Breeding value can be estimated from.... Correct Answer: an individual's performance and not the performance of its relatives.
Most common types of...
ansc 4395 exam 4 material questions and answers 100 correct
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ANSC 4395
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ANSC 4395 exam 4 Material QUESTIONS AND
ANSWERS 100% CORRECT
Breeding Value Correct Answer: - genetic merit
An individual receives how much of its genetic makeup from each parent? Correct Answer: half
Breeding value can be estimated from.... Correct Answer: an individual's performance and not
the performance of its relatives.
Most common types of relatives used: Correct Answer: - progeny
- siblings
- parents
Contribute little to the estimate of breeding value Correct Answer: distant relatives
Addition of info. from relatives will ______ ________ confidence in an estimate of breeding
value. Correct Answer: always increase
Accuracy Correct Answer: - correlation between the true breeding value
EBV The value of "b" Correct Answer: is a function of the heritability of the trait, the number of
records available, the relationship (g) & any correlation between the animals being measured.
Individual's own performance Correct Answer: single most important piece of info. for EBV.
Multiple records on an individual Correct Answer: - some traits measured several times during
an animal's lifetime
- if a trait is measured several times, each value should be used in an estimate of breeding value
Increase is most pronounced when... Correct Answer: heritability & repeatability are both low
Each additional record... Correct Answer: adds to the accuracy, but adds less than the previous
record.
Sib Info. Correct Answer: - almost any animal will have sibs
- limited number of full sibs (usually litter-bearing species)
- frequently, a large number of half sibs in any herd
2 Reasons why sibs may have similarities: Correct Answer: - some fraction of their genes in
common
full sibs- 1/2 genes in common
half sibs- 1/4 genes in common
- frequently raised in similar circumstances
particularly true for full sibs
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