Question # 1

In sickle cell anemia disease, a single thymine is replaced with an adenine in the DNA that codes for.

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Valine

Glycine

Histidine

Glutamic acid

In sickle cell anemia code for glutamic acid is replaced by.

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Leucine

Valine

Proline

Histidine

Chromosomal part which uncoils, during inter phase is called.

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Chromatids

Satellite DNA

Euchromatin

Heterochromatin

Each tRNA has a sequence of three bases called anticodon which is complementary to codon of

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rRNA

tRNA

mRNA

snRNA

A central role for chromosomes in heredity was first suggested in 1900 by.

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Karl correns

W. Sutton

F. Griffiths

T.H.Morgan

The number of nucleotides in the DNA of a typical human chromosome is about

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10 Million

40 million

80 million

140 million

³²P and ³⁵S labeled viruses were used in his experiments by

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Watson & Crick

Hershey & Chase

Wilkins & Franklin

Correns & Bridge

The copping of mRNA from DNA is called.

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Translation

Transduction

Transcription

Transformation

The no of chromosome in mouse is

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6

32

26

40

Which of the following is a non sense codon.

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UGA

UGG

AUG

AUC

In 1953 Watson and Crick proposed structure of the

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RNA molecule

ATP molecule

DNA molecule

NAD molecule

Chromosomal theory of inheritance was first formulated by.

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Karl Correns

T.H.Morgan

W. Sutton

Carvin Bridges

In the double helix of DNA adenine forms two hydrogen bonds with

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Thymine

Guanine

Cytosine

Uracil

The particular array of chromosomes that an individual possesses called its.

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Genotype

Phenotype

epistasis

Karvotype

Which of the following polymerase synthesize tRNA.

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RNA Polymerase -I

RNA Polymerase -III

RNA Polymerase -II

DNA Polymerase

The stand which elongates towards the replication fork is.

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Leading

Lagging

Okazaki

Primer

Transfer of genetic material from one cell to other that can alter the genetic make up of recipient cell is called.

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Transcription

Replication

Translation

Transformation

The number of chromosomes in frog is

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52

26

13

7

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