Assume that the occurrence of nitrogen bases in adjacent positions in a DNA strand is random. Identify the minimum number of nucleotides in a DNA strand where GAAT can occur once on the basis of probability

Options

A. 512
B. 256
C. 4096
D. 1024

Answer

B

Explanation

On this basis balance the probability of minimum number of nucleotides in
Singlet code = (4) `xx` 1 = 4
doublet code = 4`xx`4= 16
Triplet code = 4`xx`4`xx`4= 64
here the code given in quadruplet (GAAT) so it will be 4`xx` 4 `xx` 4 `xx` 4 = 256 number of nucleotides