189
Question
A functional unit of a gene which specifies synthesis of one polypeptide is a
A functional unit of a gene which specifies synthesis of one polypeptide is a
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Solution
The correct option is C Cistron
A cistron is a gene. The term cistron is used to emphasize that genes exhibit a specific behaviour in a cis-trans test; distinct positions within a genome are cistronic. For example, an operon is a stretch of DNA that is transcribed to create a contiguous segment of RNA, but contains more than one cistron / gene. The operon is said to be polycistronic whereas ordinary genes are said to be monocistronic.
A cistron is a gene. The term cistron is used to emphasize that genes exhibit a specific behaviour in a cis-trans test; distinct positions within a genome are cistronic. For example, an operon is a stretch of DNA that is transcribed to create a contiguous segment of RNA, but contains more than one cistron / gene. The operon is said to be polycistronic whereas ordinary genes are said to be monocistronic.
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