Nucleosomes are
Units of $DNA$
Units of $RNA$
Units of proteins
Units of chromosomes
Phosphorus is present in
Histones are rich in the basic amino acid ...............and........
Group the following as nitrogenous bases and nucleosides:
Adenine, Cytidine, Thymine, Guanosine, Uracil and Cytosine.
Genetically active area of chromosome is called
In a given $DNA$ segment the number of nucleotides of guanine is $75$ and those of thymine is $75$. The total number of nucleotides in the segment will be