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Arindam Paul posted an Question
May 16, 2021 • 15:39 pm 30 points
  • IIT JAM
  • Biotechnology (BT)

Which is the correct statement of the following pertaining to the mass of bases present in a double stranded dna with 50% gc content? a. a t pec b. c> g c. a> t

Which is the correct statement of the following pertaining to the mass of bases present in a double stranded DNA with 50% GC content? a. A T pec b. C> G C. A> T d. T> A [GATE]

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  • Abhijeet Gaurav

    Correct answer would be option (C). As it clear that dsDNA has 50% GC content so AT content Will be 50% also. As there would be equal number of A & T bases in the DNA molecule. So, now according to Number % A= T. But question has asked about mass. So Purine bases A & G has double Ring & has more weight than Pyrimidine bases. Thus , A has more Molecular weight than Thus A is more than T bases. Thus the answer is option C.

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    Dinesh khalmaniya 1 Best Answer

    option C Explanation- As question indicating that Double stranded DNA contains 50% GC content. it must be contains 50% AT content in which 25% is A and 25% is T indicating that A=T. we know that mass of purine is always greater than pyrimidine as purine is double ring compound while pyrimidine is single ring compund. so A >T

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    But Sir answer given is C

    eduncle-logo-app

    yes, we know that mass of purine is always greater than pyrimidine as purine is double ring compound while pyrimidine is single ring compund. so A >T

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