CUET Preparation Today
Match List I with List II
Choose the correct answer from the options given below: |
A-III, B-IV, C-I, D-II A-IV, B-III, C-II, D-I A-II, B-IV, C-I, D-III A-I, B-II, C-III, D-IV |
A-II, B-IV, C-I, D-III |
The correct answer is Option (3) → A-II, B-IV, C-I, D-III
A gene is defined as the functional unit of inheritance. Though there is no ambiguity that the genes are located on the DNA, it is difficult to literally define a gene in terms of DNA sequence. The DNA sequence coding for tRNA or rRNA molecule also define a gene. However by defining a cistron as a segment of DNA coding for a polypeptide, the structural gene in a transcription unit could be said as monocistronic (mostly in eukaryotes) or polycistronic (mostly in bacteria or prokaryotes). In eukaryotes, the monocistronic structural genes have interrupted coding sequences – the genes in eukaryotes are split. The coding sequences or expressed sequences are defined as exons. Exons are said to be those sequence that appear in mature or processed RNA. The exons are interrupted by introns. Introns or intervening sequences do not appear in mature or processed RNA. |
