問題詳情
21. DNA replication is said to be semiconservative because_________.
(A)the number of nucleotides within genes remains constant
(B)half of the DNA in a cell comes from one parent and the other half from the otherparent.
(C)the same process of DNA replication is used by all organisms
(D)the total amount of DNA within an individual remains the same
(E) cach new DNA molecule is composed of one old strand and one new strand
參考答案
答案：[無官方正解]
難度：計算中-1
書單：沒有書單，新增