55. Which of the following statements concerning “genomic imprinting” is FALSE?
(A) It is an exception to standard Medelian inheritance.
(B) In many cases, methylation of cytosine involves in genomic imprint during embryo formation.
(C) A given allele will have different effect that depends on father or mother passed along the allele.
(D) Most of the known imprinted genes are critical for embryonic development in mammal.
(E) In heterozygous of normal and recessive mutant Igf2 gene, the dwarf phenotype can be seen.
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