問題詳情
39. X chromosome inactivation is an epigenetic mechanism that silences the majority of genes on one X chromosome. The inactivation appears to involve regions of _________.
(A) mutated genes
(B) intense transcription
(C) hyper-methylated DNA
(D) hypo-methylated DNA
(E) inverted genes
參考答案
答案：C
統計：A:0,B:0,C:7,D:0,E:0
難度：計算中