Question

In the genetic code dictionary, how many codons are used to code for all the 20 essential amino acids?

61

60

20

64

Solution

Out of 64 codons, three (UM, UAG, UGA) are chain terminating codons. The translating mechanism is not able to read these codons.
(a) 61 codons are used to code all the 20 essential amino acids.

(b) Out of 64, 3 codons, UAA, UAG, UGA do not code any amino acid molecule

Some More Questions From Molecular Basis of Inheritance Chapter

Name the genetic material for majority of organisms.

List the function of RNA.

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Molecular Basis Of Inheritance

In the genetic code dictionary, how many codons are used to code for all the 20 essential amino acids?

61

60

20

64

Some More Questions From Molecular Basis of Inheritance Chapter

Name the genetic material for majority of organisms.

List the function of RNA.

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 ?

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NCERT Sample Papers

Entrance Exams Preparation

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For Daily Free Study Material Join wiredfaculty

Molecular Basis Of Inheritance

In the genetic code dictionary, how many codons are used to code for all the 20 essential amino acids? 61 60 20 64

Some More Questions From Molecular Basis of Inheritance Chapter

Name the genetic material for majority of organisms.

List the function of RNA.

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 ?

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

In the genetic code dictionary, how many codons are used to code for all the 20 essential amino acids?

61

60

20

64

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

(ii) E.coli and

(iii) haploid content of human DNA.