Question # 1

Walter Fleming first discovered chromosomes in the dividing cells of.

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Frog larvae

Sea urchin larvae

Insect larvae

Salamander larvae

Highly condensed portions of the chromatin are called.

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Homochromatin

Heterochromatin

Euchromatin

Achromatin

Origin site of replication is one in

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Prokaryotes

Eukaryotes

None of these

Both a & b

Human cells have 46 chromosomes consisting of

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20 pairs

21 pairs

22 pairs

23 pairs

A chromosome with equal length of its arms.

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Acrocentric

Metacentric

sub meta centric

Telocentric

A strand of DNA, which is not transcribed is called as.

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Template strand

Antisense strand

Lagging strand

coding strand

Amino acid attachment site of tRNA is.

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G-end

2' -end

3'- end

5' -end

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

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rRNA

tRNA

mRNA

snRNA

Every 200 nucleotides the DNA duplex is coiled around a core of eight histone proteins forming a complex known as a

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Histomone

Nucleosome

Peroxisome

Glyoxisome

DNA changes are called mutations and the organisms that have undergone such changes are called

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Wild types

Changer

Mutants

Transmutants

The base pairs in human genome are.

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Two billion

Three billion

Four billion

Five billion

Which of the following is a 'start' codon

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AUG

UAG

UAA

UGA

Repeating units of DNA are called.

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Histones

Nucleosides

Nucleotides

Amino acids

Chromosomal part which uncoils, during inter phase is called.

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Chromatids

Satellite DNA

Euchromatin

Heterochromatin

The genetic code for glycine is.

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UAG

GAU

GUA

GGU

Innate behavior is all but;

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Heritable

Intrinsic

Sterotypic

Flexible

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

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Thymine

Guanine

Cytosine

Uracil

Which one of the following is initiation codon.

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AUG

GUA

UGA

GAC

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