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A double stranded DNA has 20% cytosine. What will be the percentage of thiamine in it ? (A) 20% (B) 40% (C) 30% (D) 10%
A double stranded DNA has 20% cytosine. What will be the percentage of thiamine in it ? (A) 20% (B) 40% (C) 30% (D) 10%
biology | Previous year question
A double stranded DNA has 20% cytosine. What will be the percentage of thiamine in it ? (A) 20% (B) 40% (C) 30% (D) 10%

Correct option:(C)30%

Explanation:

  • If a double-stranded DNA has 20% cytosine, it has 20% guanine. 
  • Thus, C + G makes 40% of the total bases. 
  • The remaining 60% includes both adenine(30%) and thymine(30%) which are in equal amounts.

 

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