
Which is not correct according to Chargaff's rule?

Important Questions on Molecular Basis of Inheritance
Secondary metabolites do not have identifiable physiological processes in plants, fungal and microbial cells
Bio macromolecules are acid insoluble organic compounds with mol wt more than daltons
Uridylic acid and cytidylic acids are derived from uracil and cytosine by esterification
Lecithin and lectin are phospholipids found in cell membrane


No. of arms present in chromosome where the centromere is terminal.
Total No. of histone proteins present inside the nucleosome
No. of histone proteins help to seal the near the core
No. of proteins in a nucleosome

: Composition of cell membrane of Erythrocyte
: No. of strands present in peripheral fibril of centriole
: No. of nucleotides in a typical nucleosome
protein, Lipids
protein, Lipids
Phosphoglycolipids
Select the option that correctly matches respectively with .



Assertion Between and , is a better genetic material.
Reason group present in every nucleotide in is a reactive group and make labile and easily degradable.
The correct answer is:


Which one of the following pairs of nitrogenous bases of nucleic acids, is wrongly matched with the category mentioned against it?


Percentage |



DNA molecule has length of with guanosine. Choose the correct features of
Hydrogen bonds
Total nucleotides

Match the following lists:
List | List | ||
A) | X-ray diffraction data | Chargaff | |
B) | DNA double stranded | Meischer | |
C) | DNA double helix | Wilkins | |
D) | DNA as an acidic substance | Watson Crick |
The correct match is





