true or false: 1)Narrow sense and broad sense heritability are equal when there is no dominance...

true or false:

1)Narrow sense and broad sense heritability are equal when there is no dominance and no epistasis

2) Broad sense heritability and repeatability are the same when there are no temporary environmental effects

3) Narrow sense heritability and repeatability are always the same when there are no non-additive genetic effects

4) Narrow sense heritability can be used as the regression coefficient to predict phenotypic value from breeding value

Solutions

Expert Solution

1) Narrow sense and broad sense heritability are equal when there is no dominance and no epistasis

TRUE

Broad sense heritability is given by

And Narrow sense heritability is given by

If there is no dominance or epistasis, then the narrow-sense and broad-sense heritability are the same (h2=H2).

2) Broad sense heritability and repeatability are the same when there are no temporary environmental effects

TRUE

Repeatability is expressed as

Therefore when are no environmental effects,

3) Narrow sense heritability and repeatability are always the same when there are no non-additive genetic effects

FALSE

When there are no non- additive genetic effects (like dominance and epistasis ), then

Narrow sense heritability is given by

And repeatability is given by

We can see that

4) Narrow sense heritability can be used as the regression coefficient to predict phenotypic value from the breeding value

TRUE

h is also expressed as the correlation between breeding and phenotypic values within an individual.

gladiator answered 1 year ago

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