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Molecular Basis of Inheritance — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYMolecular Basis of Inheritance1 Mark
MCQ
Portion of gene which is transcribed but not translated is:
  • A
    Exon
  • B
    Intron
  • C
    Cistron
  • D
    Codon
✓

Answer

  1. Intron

Explanation:

The process of RNA synthesis from DNA is called transcription. During transcription, the complete gene is copied into a pre-mRNA along with exons and introns.

The exons are the coding regions and the introns are the non-coding regions. The process of RNA splicing converts the pre-mRNA to mRNA and involves the removal of introns and the joining of exons.

This results in the formation of the mature mRNA that is translated into a protein.

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