Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →
Sign in

Molecular Basis of Inheritance question

2003 · Q75
Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
  1. PYQ Library
  2. /NEET
  3. /Biology
  4. /Molecular Basis of Inheritance
  5. /2003 · Q75

Molecular Basis of Inheritance question

2003 · Q75

NEETBiologyMolecular Basis of InheritanceMCQ+4 / −1
In the genetic code dictionary, how many codons are used to code for all the 20 essential amino acids : -
  1. A
    64
  2. B
    20
  3. C
    60
  4. D
    61
View written solutionFree

Correct answer: D

Out of a total of 64 codons, 3 codons do not make any sense. Hence only 61 codons are used in the formation of the 20 essential amino acids (polypeptides).

PreviousNext

More from Molecular Basis of Inheritance

  • During translation initiation in prokaryotes, a GTP molecule is needed in : -2003 · MCQ
  • What would happen if in a gene encoding a polypeptide of 50 amino acids, 25th codon (UAU) is mutated to UAA ?2003 · MCQ
  • Which one of the following triplet codes, is correctly matched with its specificity for an amino acid in protein synthesis or as 'start' or 'stop' codon ?2003 · MCQ
  • Degeneration of a genetic code is attributed to the : -2003 · MCQ
  • Which of the following reunites the exon segments after RNA splicing ?2002 · MCQ
  • In a DNA percentage of thymine is 20% then what is the percentage of guanine : -2002 · MCQ
  • Jacob and Monad studied lactose metabolism in E.Coli and proposed operon concept. Operon concept applicable for :2002 · MCQ
  • Transformation experiment was first performed on which bacteria : -2002 · MCQ