70. Most cellular DNAs are supercoiled. What is the relation between writing number (Wr), linking number (Lk) and twist number (Tw)?
(A) Lk=Tw+Wr
(B) Lk=Tw-Wr
(C) Lk=Wr-Tw
(D) Tw=Lk+Wr

答案：登入後查看
統計： A(1), B(0), C(0), D(0), E(0) #2753879