Tizo and Levan's contribution is very significant because they
Gave the number of human chromosomes
Pointed out mutational changes
Identified Barr bodies
Detected sex linkage
Pleotropic character represent that quality of gene which is called
Sugars are attached to the pyrimidines by the formation of
The terminal end of a chromosome is called
Histone occupies the major grooves of $DNA$ at an angle of
Nucleoid is present in