Question: Genomic imprinting occurs when gene expression in the offspring depends upon whether a particular…

Genomic imprinting occurs when gene expression in the offspring
depends upon whether a particular allele was inherited from the
mother or the father. Which of the following statements is likely
to explain the evolutionary basis for the existence of
imprinting?

Sex-linked traits are more likely to affect males than females.
Therefore, if a trait is beneficial, it may be expressed only when
inherited from the father. Both beneficial and harmful traits may
be expressed when inherited from the mother.

Sexual selection favors opposite characteristics in males and
females. For example, a deep voice decreases a human female/’s
chances of finding a mate, but does not harm a male/’s chances.
Therefore, the gene for a deep voice is expressed when inherited
from the father and not when inherited from the mother.

Maximum fitness can be achieved in different ways for males and
females. For example, maximum birth weight and fetal growth are
favored by fathers because they increase offspring survival.
Mothers favor maternal survival and the preservation of resources
for future reproduction. Therefore, a mother may benefit from
reduced fetal growth rates.

Strong maternal attachment is favored in mothers, and strong
paternal attachment is favored in fathers. Therefore, offspring
that inherit a gene for paternal attachment from their mother will
not express the gene. Likewise, offspring that inherit a gene for
maternal attachment from their father will not express the
gene.