Question

A molecular biologist analysed a nucleic acid sample and found that it contained the N2 bases in following proportion A = 20%, T = 15%, C = 35%, G = 30%. This data indicates
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Answer 1

Explanation:

THIS DATA INDICATES THAT- (1)-Nucleic acid in sample is single stranded DNA ... the N2 base in following proportion A=20%, T=15%, C=35%, G=30 %.

Answer 2

Answer:

The DNA in question is double-stranded.

Explanation:

In question, we are given the ratio of nitrogen bases and then we have to analyze the situation accordingly.

• The given nucleic acid is DNA (Deoxyribonucleic acid) since it contains Thymine.
• Chargaff's rule states that the ratio of a pyrimidine to purine nucleotides in DNA from any cell of any organism is 1:1.
• As a result, the amounts of guanine and adenine are equivalent to cytosine and thymine, respectively.
• This is because adenine and thymine pair with guanine and cytosine, respectively, in a dsDNA.
• The mole ratio of purines to pyrimidines in the DNA sample provided, however, follows the norm. Thus, the DNA in question is double-stranded.

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