A mutation changes a codon from UCG to UAG. This mutation is a:

A single human cell contains approximately $6.6 imes 10^9$ base pairs of DNA. Given that the distance between consecutive base pairs is $0.34$ nm, calculate the total length of DNA in a human cell.

In DNA helix presence of hydrogen bonds was first observed by?

The number of hydrogen bonds between adenine and thymine in a DNA molecule is

In DNA, which of the following is absent?

Which of the following is structural subunit of DNA?

The human genome contains approximately $3 imes 10^9$ base pairs per haploid set. If the distance between two consecutive base pairs is $0.34$ nm, calculate the approximate length of DNA in a diploid human cell.

‘It has not escaped our notice that the specific pairing we have postulated immediately suggests a possible copying mechanism for the genetic material’. This is written by

Read the following statements w.r.t. B-DNA (A) Backbone is formed by the sugar-phosphate sugar chain (B) The two strands of polynucleotides are antiparallel (C) At each step of ascent, the strand turns ${36^0}$ (D) The rise per base pair would be $34\,\mathop A\limits^0$ How many statements are correct?

Double helix model for the structure of DNA was proposed by?

In a double helix of DNA molecule of 10 coils, if there are 30 adenine nitrogen bases, what is the number of guanine nitrogen bases?