Which of the following expresses the relationship among the linking number,twist,and writhe?
A) Tw = Lk + Wr
B) Lk = Tw - Wr
C) Lk = Wr - Tw
D) Lk = Tw + Wr

Question

Quizplus · Accepted Answer

The linking number (Lk) of a closed, twisted DNA double helix is equal to the sum of its twist (Tw) and writhe (Wr). Therefore, the correct expression of their relationship is Lk = Tw + Wr, which is option D. Options A, B, and C are incorrect expressions.

Which of the Following Expresses the Relationship Among the Linking