What is the formula for the linking number?
A) Lk = Wr − Tw
B) Lk = Wr + Tw
C) Tw = Wr + Lk
D) Lk = Tw/Wr
E) None of the answers is correct.

Question

Quizplus · Accepted Answer

The linking number (Lk) is a topological property of DNA that describes the total number of times one strand of DNA winds around the other. It is the sum of the twist (Tw), which is the number of helical turns in the DNA, and the writhe (Wr), which is the number of times the DNA helix crosses over itself. Therefore, the correct formula is Lk = Wr + Tw.

What Is the Formula for the Linking Number