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Isotopes used for providing semi conservative replication of DNA are

Isotopes used for providing semi conservative replication of DNA are

Options

(a) N¹⁴ and P³¹
(b) N¹⁴ and C¹⁴
(c) N¹⁴ and N¹⁵
(d) C¹⁴ and P³¹

Correct Answer:

N¹⁴ and N¹⁵

Explanation:

All bases in DNA contain nitrogen. There are 2 forms of nitrogen: Nitrogen¹⁴ (N¹⁴) which is lighter and its isotope Nitrogen¹⁵ (N¹⁵) which is heavier bacteria incorporate nitrogen from growing medium into new DNA made.

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