A) cistron
B) transposon
C) intron
D) recon
Correct Answer: B
Solution :
Transposon is a DNA segment or genetic element moving from one chromosome to another. The term, was introduced by RW Hedges and AE Jacob in 1974, to controlling elements or jumping genes, discovered by Barbara Me Clintock (1950) in maize. Cistron is the functional unit of DNA molecules, it codes for a particular gene product. Recon is the cross-over unit or it is segment of DNA which participates in crossing over. Introns are the interrupted genes or those regions of a gene which do not form the part of mRNA and are removed from primary mRNA during gene expression in eukaryotes. These are non-coding sequences which get removed during splicing and processing.
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