Commonly used vectors for human genome sequencing are

(1) T-DNA

(2) BAC and YAC

(3) Expression vectors

(4) T/A cloning vectors

Concept Questions :-

Human Genome Project
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The diagram shows an important concept in the genetic implication of DNA. Fill in the blanks A to C

 

(1) A-transcription, B-replication, C-James Watson

(2) A-translation, B-transcription, C-Ervin Chargaff

(3) A-transcription, B-translation, C-Francis Crick

(4) A-translation, B-extension, C-Rosalind Franklin

Concept Questions :-

Transcription: I
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Which enzymes/s will be produced in a cell in which there is a non-sense mutation in the lac Y gene?

(1) β-galactosidase

(2) Lactose permease

(3) Transacetylase

(4) Lactose permease and transacetylase

Concept Questions :-

Gene Regulation:Lac Operon
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Removal of RNA polymerase III from nucleoplasm will affect the synthesis of

(1) tRNA

(2) hnRNA

(3) mRNA

(4) rRNA

Concept Questions :-

Transcription: IV
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Which one of the following is not a part of a transcription unit in DNA?

(1) The inducer

(2) A terminator

(3) A promoter

(4) The structural gene

Concept Questions :-

Transcription:II
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If one strand of DNA has the nitrogenous base sequence as ATCTG, what would be the complementary RNA strand sequence?

(1) TTAGU

(2) UAGAC

(3) AACTG

(4) ATCGU

Concept Questions :-

Transcription:II
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Removal of introns and joining of exons in a defined order during transcription is called

(1) looping

(2) inducing

(3) slicing

(4) splicing

Concept Questions :-

Transcription: IV
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What are those structures that appear as ‘beads-on-string’ in the chromosomes when viewed under electron microscope?

(1) Nucleotides

(2) Nucleosomes

(3) Base pairs

(4) Genes

Concept Questions :-

DNA Packaging
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Select the two statements out of the four (A - D) given below about lac operon.

(A) Glucose or galactose may bind with the repressor and inactivate it

(B) In the absence of lactose, the repressor binds with the operator region

(C) The z-gene codes for permease

(D) This was elucidated by Francois Jacob and Jacques Monod

The correct statements are

(1) (B) and (C)

(2) (A) and (C)

(3) (B) and (D)

(4) (A) and (B)

Concept Questions :-

Gene Regulation:Lac Operon
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The one aspect which is not a salient feature of genetic code, is its being

(1) degenerate

(2) ambiguous

(3) universal

(4) specific

 

Concept Questions :-

Genetic Code: III
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