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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?

a)

30

b)

60

c)

70

d)

80


Question ID - 2807 :-

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?

a)

30

b)

60

c)

70

d)

80

1 Answer
5876 Votes
3537

Answer Key : (c) -

(c)

Total number of coils in a DNA molecule=10.

We know that total number of nitrogen bases are present in a coil=20 (or 10 pairs).

Thus, total number of nitrogenous base is 200. Out of these, 30 are adenine thus, according to Chargaff’s rule guanine should be 70 in number.



Next Question :

The study related to the structure and function of a cell is called

a)

Physiology

b)

Cytology

c)

Histology

d)

Cellology


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