Statement P: An m-RNA consists of 75 nucleoti | vedclass

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(B) Statement $P$ is incorrect because an $m-RNA$ molecule can have a variable number of nucleotides depending on the length of the polypeptide chain

Vedclass · Accepted Answer

Both Statement $P$ and Statement $Q$ are incorrect.

Vedclass · Answer

(B) Statement $P$ is incorrect because an $m-RNA$ molecule can have a variable number of nucleotides depending on the length of the polypeptide chain it encodes. It is not fixed at $75$.Statement $Q$ is incorrect because there are $64$ codons in the genetic code,out of which $61$ code for amino acids and $3$ are stop codons. Furthermore,these codons are present on the $m-RNA$ molecule,not in the cytoplasm as free entities. Therefore,both statements are incorrect.

Statement $P$: An $m-RNA$ consists of $75$ nucleotides.
Statement $Q$: There are $61$ types of codons in the cytoplasm.

Similar Questions

Which of the following is incorrect?

The arrangement of $DNA$ has the triplet base sequence $AAC\ GAC\ AGC\ GGC\ ACA\ AAA$. Due to a mutation,the first base is deleted. What is the likely effect of this on the coding of the $DNA$ segment?

If there are $6$ types of nitrogen bases and $40$ types of amino acids available for protein synthesis,what is the minimum number of nitrogen bases required to form a codon in the genetic code?

The codons on $mRNA$ are $CAU-CCU-AAA-CUG$. Identify the correct sequence of amino acids.

Who proposed that the genetic code for amino acids should be made up of three nucleotides?

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Statement $P$: An $m-RNA$ consists of $75$ nucleotides.Statement $Q$: There are $61$ types of codons in the cytoplasm.