Question

Another quick question about grammar...

"...two large single stranded DNA, which have a low viscosity" (would it be have or has????)

Answer 1

have because you said "two, etc."

Sra

Answer 2

Frankly, one strand or two strands and viscosity have nothing to do with each other. Viscosity is a macroscopic characteristic (ie , trillion trillion trillion trillion molecules), and a strand is microscopic (in ones or twos). So a single strand cannot have viscosity. I would rephrase what you want to say...as a single strand of DNA moves quickly? (low viscosity flows quickly, as viscosity is resistance to flow).