Nucleotide pairs present in one turn of DNA helix
Watson and Crick Model of DNA double helix
According to Watson and Crick’s model of double helical DNA -
One turn of DNA helix has 10 nucleotides or 10 base pairs.Length of one complete turn of the DNA double helix is 34Å=3.4 nm.
Length between two adjacent base pairs =(3.4/10) nm=0.34 nm.