Q. A level of regulation, demonstrated by the termination of transcription if tryptophan is abundant, by the tryptophan operon in E.coli cells is called

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Q. An mRNA transcript of a gene contains

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Q. Which of the following proteins first binds to TATA box during transcription?

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Q. The components found in all prokaryotic transcription terminators is

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Q. A specific __________ factor helps RNA polymerase bind to late promoters and transcribe late genes.

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Q. Genetic variations are

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Q. The mutation which will not affect the length of a protein is,

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Q. Changes in which of the following characterizes mutations?

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Q. Which of the following(s) is/are steps in excision repair mechanisms?

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Q. The whole-genome shotgun sequencing approach depends primarily on

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Q. What was the first eukaryotic chromosome to be sequenced?

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Q. Which of the following mutations arise without exposure to external agents?

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Q. Due to which of the following DNA repair mechanisms, one is able to distinguish newly synthesized DNA strands from older one?

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Q. Which of the following bacterial genome was sequenced first?

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Q. A nonsense mutation may result into

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Q. Which of the following mutation affects only a single nucleotide?

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Q. When mutations involve vital functions so that the mutants are nonviable, it is a

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Q. A mutagen is defined as

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Q. The DNA sequences of rRNA genes can be used to

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Q. A nonsense mutation introduced into the DNA sequence of a gene may

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