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Molecular Basis of Inheritance — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYMolecular Basis of Inheritance1 Mark
MCQ
A human gene product can be produced by genetically engineered bacteria. This is possible, because the:
  • A
    Genetic code is universal.
  • B
    Human chromosome can replicate in bacterial cell.
  • C
    Bacterial cell can carry out the splicing reaction.
  • D
    Mechanism of gene regulation is identical in humans and bacteria.
✓

Answer

  1. Genetic code is universal.

Explanation:

The genetic code is the set of rules by which information encoded within genetic material (DNA or mRNA sequences) is translated into proteins by living cells. 

Biological decoding is accomplished by the ribosome, which links amino acids in an order specified by mRNA, using transfer RNA (tRNA) molecules to carry amino acids and to read the mRNA three nucleotides at a time. The genetic code is highly similar among all organisms. So, genetic code is called as universal. 

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