Centromere present at the proximal end  is called ___________.

Chromosomes  come in pairs and they are called ___________.

The tips of the chromosomes are called ___________.

__________ are the hereditary material of a cell.

____________are the units  of heredity  and are  responsible for the characteristics features.

The _____________ bases are purine and  pyrimidines.

_________are also known as gametes.

Th tips of the chromosomes are called _____________.

Eukaryotic chromosome can be studied during  the __________.

Double helical structure of DNA was  given by ____________.