Question

Genomic imprinting is an example of a. pleiotropy. b. heterogeneity. c. epistasis. d. differential gene expression....

Genomic imprinting is an example of

a. pleiotropy.

b. heterogeneity.

c. epistasis.

d. differential gene expression.

e. a phenocopy.

Please briefly explain the correct answer and why it is true. Also If you could explain why it wouldn't be epistasis as I am having a hard time understanding what it is.

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Answer #1

Genomic imprinting is an example of

(d). differential gene expression.

  • it is an example of epigenetics and epigenetics is a study of heritable changes in gene expression and it doesn't have any changes in a DNA sequence.
  • it is depending on which allele is inherited from the mother and father.
  • in somatic cells, imprints are modified during development. these imprints are maintained in the early embryo and fully matured and they need to be read and this reading converts methylation or chromatin imprints into differential gene expression.

epistasis is an interaction between different genes. the effects of allelic state at one gene depends on the allelic state of another gene.

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