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Molecular Basis of Inheritance

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Class 10 Class 12

Differentiation of organs and tissues in a developing organism, is associated with

• developmental mutations

• differential expression of genes

• lethal mutations

• deletion of genes

B.

differential expression of genes

Differentiation of organs and tissues in a developing organism, is associated with differential expression of genes. In regulation of gene expression the chromosomal proteins play an important role. The chromosomal proteins are of two types histones and non-histones. The regulation of gene expression involves an interaction between histones and non-histones.

Differentiation of organs and tissues in a developing organism, is associated with differential expression of genes. In regulation of gene expression the chromosomal proteins play an important role. The chromosomal proteins are of two types histones and non-histones. The regulation of gene expression involves an interaction between histones and non-histones.

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List the number of base pairs in :

(i) lambda bacteriophage

(ii) E.coli and

(iii) haploid content of human DNA.

(i) 48502 bp
(ii) 4.6 x 106 bp and
(iii) 3.3 x 109 bp.
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Name the genetic material for majority of organisms.

DNA (Deoxyribose nucleic acid)
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Comment two chains of DNA have antiparallel polarity.

The Two chain of DNA are antiparallel that is
if one chain has 5’ x 3’ polarity the other chain has 3’ x 5’ polarity.
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List the function of RNA.

Functions of RNA
RNA acts as genetic material in viruses
It also functions as an adapter and messenger
It also acts as a catalytic molecule and catalyses various biochemical reactions.
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How many nucleotides are present in a bacteriophage $\mathrm{\varphi }$ x 174.

5386
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