Which of the following molecules helps to "turn off" genes in a cell?

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#Question id: 28347

#Unit 5. Developmental Biology

Par-1 protein is responsible for___

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#Question id: 11897

#General Aptitude

Which least number should be subtracted from the number 36798 so that the new number is completely divisible by 78?

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#Question id: 19716

#Unit 3. Fundamental Processes

The telomeric sequence is found in plants and humans so conserved in nature, while Drosophila telomeres are an exception derived from 

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#Question id: 8773

#Unit 9. Diversity of Life Forms

Which eukaryotic kingdom includes members that are the result of endosymbioses that included an ancient aerobic bacterium and an ancient cyanobacterium?

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#Question id: 2855

#Unit 2. Cellular Organization

Which statements are correct about lac operator;

I. The site bound by the Lac repressor.

II. The lac operator overlaps the promoter, and so the repressor bound to the operator physically prevents RNA polymerase from binding to the promoter and thus inhibit the RNA synthesis.

III. Have 21-bp sequence with twofold symmetric and is recognized by four subunits of Lac repressor, two binding to each half-site.

IV. CAP binds as a dimer to a site similar in length to that of the lac operator, but different in sequence. This site is located some 60 bp upstream of the start site of transcription.