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Molecular Basis Of Inheritance

Question
CBSEENBI12047310
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Which one of the following triplet codon is known as initiation codon?

  • UUU

  • UAA

  • AUG

  • UGA

Solution

C.

AUG

AUG and GUG are called initiation codons because they initiate the polypeptide chain. UAA (Ochre), UAG (Amber) and UGA (Opal) are termination codons. If these codons are present in mRNA, the protein synthesis stops abruptly, whether the protein synthesis is complete or not.

UUU codes for phenylalanine.

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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