Molecular Basis...

E.coli was used as a tool for which of the following?
a. Discovery of transformation
b. Semi-conservative replication
c. Discovery of transduction
d. Discovery of DNA as transforming factor

If a B DNA molecule is 68 Angstrom long, then how many base pairs does it contain?

DNA ligase is an important enzyme that takes part in DNA replication. Which of the following roles does it play?

What was the contribution made by Chargaff in proposition of double helical model of DNA by Watson and Crick?

Which of the following linkages help(s) in the formation of base pairs in DNA molecule?

Histones are proteins which are involved in the formation of nucleosomes in the cell. They are rich in

In a cell, the process of transcription takes place in

Which of the following chromosomes in the human genome have the maximum and minimum number of genes, respectively?

In which of the following gene sequences would a mutation invariably influence the binding of RNA polymerase to DNA?

A cistron is a segment of DNA coding for a polypeptide. Which of the following statements about cistron of eukaryotes is/are true?
a. It is monocistronic.
b. It is polycistronic.
c. Genes in eukaryotes are split.
d. Cistron possesses only coding sequences.