A group of genes whose activity is coordinated by a DNA site is called:

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Q: 20 (SSC/0)
A group of genes whose activity is coordinated by a DNA site is called:

question_subject: 

Science

question_exam: 

SSC

stats: 

0,3,32,3,4,13,15

keywords: 

{'genes': [3, 0, 0, 0], 'dna site': [1, 0, 0, 0], 'operon': [1, 0, 0, 0], 'cistron': [1, 0, 0, 0], 'group': [0, 1, 0, 0]}

The correct answer is option 1, operon. An operon is a group of genes that are regulated and coordinated together by a single DNA site. This DNA site, known as the operator, controls the expression of the genes within the operon. The operator acts as a switch, turning on or off the transcription and translation of the genes. This allows for the regulation of gene expression in response to various environmental conditions. Option 2, cistron, refers to a section of DNA that codes for a single polypeptide or protein. Option 3, polysome, refers to multiple ribosomes bound to a single mRNA molecule, involved in protein synthesis. Option 4, polypeptide, refers to a chain of amino acids linked together by peptide bonds, which is a product of gene expression.