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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

Amino acid sequence, in protein synthesis is decided by the sequence of

• t-RNA

• m-RNA

• c-DNA

• r-RNA

B.

m-RNA

In the process of protein synthesis, the messenger RNA (m-RNA) is responsible for carrying the genetic code transcribed from DNA to specialized sites within the cell (called ribosomes) where the information is translated into protein composition. The sequence of amino acids in a particular protein is determined by the sequence of t-RNA, c-DNA or  r-RNA do not decide the amino acid sequence in protein synthesis.

In the process of protein synthesis, the messenger RNA (m-RNA) is responsible for carrying the genetic code transcribed from DNA to specialized sites within the cell (called ribosomes) where the information is translated into protein composition. The sequence of amino acids in a particular protein is determined by the sequence of t-RNA, c-DNA or  r-RNA do not decide the amino acid sequence in protein synthesis.

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.

Name the genetic material for majority of organisms.

DNA (Deoxyribose nucleic acid)

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.

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.

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

5386

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