Question

< Question 4 of 14 > 0 Attempt 2 Why do calculations for narrow sense heritability not include dominance or epistasis? O O O O Dominance and epistasis are additive and do not depend on interactions with other alleles. Dominance and epistasis are primarily responsible for offspring resembling their parents. The effects of dominance and epistasis increase during meiosis and exaggerate trait expression. The effects of dominance and epistasis depend on the presence of other inherited alleles.

Answer 1

Narrow sense heritibility includes only additive genetic variance. Since dominance and epistatis are non-additive genetic variance, narrow sense heritiblity not include them. One reason is that non-additive variance are not included in narrow sense heritibility because the effects of these phenomenon is affected by the presence and absence of other alleles or gene.

Option D is right