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Molecular Basis of Inheritance

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12

The association of histone H1 with a nucleosome indicates:

  • Transcription is occurring

  • DNA replication is occurring

  • The DNA is condensed into a Chromatin Fibre

  • The DNA double helix is exposed


The DNA is condensed into a Chromatin Fibre

Name the genetic material for majority of organisms.

DNA (Deoxyribose nucleic acid)

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.

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.

How many nucleotides are present in a bacteriophage ϕ x 174.


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.