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Question

Biology Question on the molecular basis of inheritance

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

A

r-RNA

B

t-RNA

C

m-RNA

D

c-DNA

Answer

m-RNA

Explanation

Solution

Messenger RNA or mRNA has been named so because it carries the coded information from DNA for the synthesis of proteins. It carries the coded information in a number of base triplets called codons. It is transcribed on DNA by the enzyme RNA polymerase. Hence its base sequence is complementary to DNA on which it has been synthesized. In eukaryotes each gene transcribes its own m-RNA, therefore the number of m-RNAs corresponds to the number of genes. rRNA is a type of RNA that forms structural and functional components of ribosomes. rRNA is a class of RNA having structures with triplet nucleotide sequences that are complementary to the triplet nucleotide coding sequences of mRNA. It binds with amino acids and transfers them to ribosomes.