Question

Assertion A single-strand of mRNA is capable of forming different polypeptide chains
Reason Termination codons occur in mRNA
A. Both Assertion and Reason are true and the Reason is a correct explanation of the Assertion
B. Both Assertion and Reason are true and the Reason is not the correct explanation of the Assertion
C. Assertion is true, but the Reason is false
D. Assertion is false, but the Reason are false

Answer 1

Correct Answer - B
In prokaryotes, a single mRNA molecule may code for one or several polypeptide chains . If it carries the code for only polypeptide the mRNA is monocistronic and if it codes for two or more different polypeptides the mRNA is polycistronic in eukaryotes most mRNAs are monocistronic Termination codons like UAA, UGA, UAG etc. are present on mRNA and capable to release the polypeptide chain