Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEET2019ZoologyMolecular Basis of InheritanceActual

In DNA 20 % bases are adenine. What percentage of bases are pyrimidines?

Options

  1. A30 %
  2. B60 %
  3. C50 %
  4. D20 %

Correct answer

C. 50 %

Step-by-step solution

According to chargaff's rule A + G = C + T =50 % If A =20 % then T =20 % aligned C + T & =50 % C =50 %-20 % & =30 % aligned Total percentage of pyrimidine bases ( T + Q ) are 20+30=50 %

Practice Molecular Basis of Inheritance on Quantrex Academy →

More from Molecular Basis of Inheritance

Which of the following statements about lac-operon is correct ? 2026Which of the following enzymes synthesizes precursor mRNA ? 2026Which of the following statements are correct with reference to a transcription unit ? A. A transcription unit in DNA is defined primarily by three regions : promoter, structural g 2026Which of the following statements are correct with reference to packaging of DNA helix ? A. Histones are organized to form a unit of eight molecules called histone octamer. B. Hist 2026Arrange the following steps of DNA fingerprinting in a correct sequence. A. Isolation of DNA and its digestion by restriction endonucleases. B. Hybridisation using a labelled VNTR 2026In the lac operon, the z gene codes for : 2026Given below are two statements : Statement I : In the RNA world, RNA is considered the first genetic material evolved to carry out essential life processes. RNA acts as a genetic m 2025Match List I with List II: array |l|l|l|l| & List - I & & List - II A . & Alfred Hershey and Martha Chase & (i) & Streptococcus pneumoniae B. & Euchromatin & (ii) & Densely packed 2025 Full Molecular Basis of Inheritance list All NEET PYQs