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Biology Question on Structure of DNA and RNA

If Adenine makes 30%30 \% of the DNA molecule, what will be the percentage of Thymine, Guanine and Cytosine in it?

A

T:20;G:30;C:20T : 20 ; G : 30 ; C : 20

B

T:20;G:20;C:30T : 20 ; G : 20 ; C : 30

C

T:30;G:20;C:20T : 30 ; G : 20 ; C : 20

D

T:20;G:25;C:25T : 20 ; G : 25 ; C : 25

Answer

T:30;G:20;C:20T : 30 ; G : 20 ; C : 20

Explanation

Solution

Thymine −30%-30 \%, Guanine −20%-20 \%, Cytosine −20%-20 \% (Chargaffs nitrogen base pairing rule which states that amount of Adenine is equal to Thymine and Guanine is equal to Cytosine.