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Molecular Basis of Inheritance

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CBSE Gujarat Board Haryana Board

## Previous Year Papers

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Class 10 Class 12

What is not true for genetic code?

• A condon in mRNA is read in a non-contiguous fashion

• It is nearly universal

• It is degenerate

• It is unambiguous

A.

A condon in mRNA is read in a non-contiguous fashion

The general features of genetic code are:

(i) The genetic code is written in linear form, using the ribonuclotide bases that compose mRNA molecule as letters.

(ii) Each word of codon consists of three letters, ie, the codon triplet.

(iii) The genetic code inside the cell medium is said to be non-ambiguous.

(iv) The code is degenerate, ie, a given amino acid can be specified by more than one codons.
(v) The codon contains start and stops signals.

(vi) The code is said to be commaless.

(vii) The code is said to be commaless.

The general features of genetic code are:

(i) The genetic code is written in linear form, using the ribonuclotide bases that compose mRNA molecule as letters.

(ii) Each word of codon consists of three letters, ie, the codon triplet.

(iii) The genetic code inside the cell medium is said to be non-ambiguous.

(iv) The code is degenerate, ie, a given amino acid can be specified by more than one codons.
(v) The codon contains start and stops signals.

(vi) The code is said to be commaless.

(vii) The code is said to be commaless.

361 Views

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.
757 Views

Name the genetic material for majority of organisms.

DNA (Deoxyribose nucleic acid)
965 Views

How many nucleotides are present in a bacteriophage $\mathrm{\varphi }$ x 174.

5386
805 Views

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.
658 Views

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.
721 Views