Genes are chemically
Polynucleotide
Histones
Lipoproteins
Hydrocarbons
Packaging of $DNA$ helix
Assertion : Histones are basic proteins of major importance in packaging of eukaryotic $DNA$. $DNA$ and histones comprise chromatin forming the bulk of eukaryotic chromosome.
Reason : Histones are of five major types $H_1,\,H_2A\,, H_2B,H_3$ and $H_4$ .
Which of the following is correct for Watson and Crick's model of $DNA$. It is duplex with
The diagram shows an important concept in the genetic implication of $DNA$. Fill in the blanks $A$ to $C$.
Nucleotides are building blocks of nucleic acids. Each nucleotide is a composite molecule formed by