Q. In the presence of tryptophan in the cell, the repressor is __________

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Q. Catabolite activating protein exerts __________ control on transcription of the lac operon genes.

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Q. What are genes?

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Q. Which of the following is not a transcription factor?

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Q. Sex determination in Drosophila involves

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Q. Enhancers differ from promoters in that

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Q. Methylated gene are

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Q. A frameshift mutation occurs in the sigma subunit gene transcribed as part of SPOl early genes. What will be the immediate result?

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Q. In the presence of high levels of tryptophan

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Q. Tubulin is regulated by

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Q. Transcription factors are

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Q. Genes which need to be coordinately regulated but are not in operons may be regulated by

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Q. DNA is methylated at

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Q. Why are several structural genes regulated as a unit in bacteria?

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Q. Alternate splicing of RNA transcripts is a mechanism to regulate

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Q. Which of the following pair will produce complementary sticky ends?

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Q. A human cDNA library

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Q. What enzyme forms covalent bonds between restriction fragments?

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Q. Which of the following can be diagnosed by amniocentesis?

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Q. Which of these restriction enzymes produce blunt ends?

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