Class 12 Biology: Molecular Basis of Inheritance - Hard Worksheet

Which of the following statements about the Lac operon is INCORRECT?

The process of unwinding DNA during replication requires energy, which is provided by the hydrolysis of _______.

Explain the significance of degeneracy of the genetic code.

In Meselson and Stahl's experiment, E. coli was grown in a medium containing 15N for several generations. When transferred to a 14N medium, what would be the composition of DNA molecules after two generations?

Rho factor is involved in the _______ process in prokaryotes.

Which of the following is NOT required for the initiation of translation in prokaryotes?

Differentiate between an exon and an intron in eukaryotic genes.

The enzyme responsible for relieving the supercoiling of DNA ahead of the replication fork is _______.

If a double-stranded DNA has 20% guanine, what will be the percentage of adenine?

A mRNA molecule has a sequence 5'-AUG AAU GGU UAG-3'. How many amino acids will be in the resulting polypeptide chain?