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Molecular Basis Of Inheritance

Question

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What do you mean to the mutation in which replacement of a nucleotide occur by another similar type?

Inversion

Transition substitution

Transversion substitution

Insertion frame- shift

Solution

B.

Transition substitution

In transition substitution, one nitrogenous base is replaced by another of similar type. e.g., A $⇋$ G; C $⇋$ T

It is induced by tautomerisation (due to rearrangement of H-atoms). The NH₂ into -NH or -CO into -COH.

Some More Questions From Molecular Basis of Inheritance Chapter

List the number of base pairs in :
(i) lambda bacteriophage

(ii) E.coli and

(iii) haploid content of human DNA.

Comment two chains of DNA have antiparallel polarity.

What is the difference between DNAs and DNAase ?

Which was first genetic material ?

Suggest one evidence to prove that RNA was first genetic material.

Why was RNA unstable ?

What made DNA more preferrable as genetic material ?

Process of replication is completed in how much time in E.coli ?

What is average rate of polymerization ?

List three components of transcription unit.

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