explain how dna methylation and the formation of a dna loop control the expression of lgf2 gene in mamals. how is this gene imprinted so that only the paternal copy is expressed in offspring

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation:

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