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Animal Breeding > Exam 3 > Flashcards

Exam 3 Flashcards

1
Q

correlation between two measurements on the same animal

A

repeatability

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2
Q

measures the expected changes in one trait per unit change in another.

A

regression

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3
Q

statistic describing the average performance in a population

A

mean

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4
Q

environment affecting all records on an individual

A

permanent

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5
Q

statistics describing how two traits vary together

A

covariance

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6
Q

P stands for what

A

phenotype= the sum of genetic effect and environmental effect

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7
Q

BV stands for what

A

Breeding Value=value of an individual gene

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8
Q

DOM stands for what

A

Dominance= the value of the combination of genes

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9
Q

EPI

A

Epistatic=value of allele interaction across loci

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10
Q

PE

A

permanent environment= area surrounding affecting all records of an individual

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11
Q

TE

A

Temporary environment= area surrounding affecting only one record of an individual.

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12
Q

How an individual will performance

A

BV+DOM+EPI

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13
Q

how a parent will value

A

BV

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14
Q

The proportion of phenotypic variation caused by genotypic variation.

A

Heritability

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15
Q

Can heritability change over time

A

Yes it can because the genetic variance changes in response to selection

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16
Q

When would you like to increase repeatability and why

A

increasing repeatability will help indicatean animals producing ability. why would be if you wanted a cow that produces a high milk yield so increasing that traits repeatability will cause that cow to produce more and more milk over time

17
Q

When would you like to increase heritability and why

A

increasing heritability is a good indicator of breeding value. the high the Her. the more rapid the genetic progress.

18
Q

improving H^2 and r is improved by

A

managing the animals so that the environmental effect is consistent

Animal Breeding (3 decks)

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