Question

4. DNA molecule has uniform diameter due
to :
(a) Double stranded
(b) Presence of phosphate
(c) Specific base pairing between purine
and pyrimidine
(d) Specific bace pairing between purine and purine​

Answer 1

Answer:

Option (d) is the correct Answer.

DNA molecule has uniform diameter due to Specific base pairing between purine and pyrimidine. Scientists while investigated molecular structure by observing the pattern of formation by X-rays shot through a crystal of the substance being examined.

The patterns give vital information about the structure of the molecule being investigated. In the lab of Wilkins, one researcher Rosalind Franklin was using X-ray crystallography to investigate the structure of DNA.

Watson and Crick were able to piece together DNA of the molecule related puzzle by utilizing data generated by Frank line.  

Answer 2

Option (C) is Right Answer

Explanation:

  (c) Specific base pairing between purine  and pyrimidine

• DNA molecule has uniform diameter because of specific base blending among purine and pyrimidine
• In DNA, the bases adenine and guanine structure hydrogen bonds with their reciprocal pyrimidines; thymine and cytosine, individually, this is called as complementary base pairing
• Most DNA molecules consist of two biopolymer strands coiled around one another to frame a double helix
• The two DNA strands are known as polynucleotides since they are composed out of easier units called nucleotides
• Every nucleotide is made out of a nitrogen-containing nucleobase either guanine (G), adenine (A), thymine (T), or cytosine (C) just as a monosaccharide sugar called as deoxyribose and a phosphate simpler