A DNA molecule is a large macromolecule consisting of millions of nucleotides. Hence called as ___________.
Nucleotide
Polynucleotide
Polypeptides
None
The tips of the chromosomes are called ___________.
chromatids
telomeres
dicentric
Double helical structure of DNA was given by ____________.
Meisher
J.D. Watson
F.H.C. Crick
Watson and Crick
The _____________ bases are purine and pyrimidines.
hydrogen
oxygen
nitrogen
carbondioxide
Th tips of the chromosomes are called _____________.
Centromere
Telomere
Chromatid
None of these
__________ are the hereditary material of a cell.
Chromomere
Chromatin
Chromosomes
Centromere present at the extreme end, it is called ______________.
Acrocentric
Metacentric
Teleocentric
none of these
Centromere present at the proximal end is called ___________.
When the centromere is slightly displaced from the centre it is said to be __________.
Submetacentric
none
Chromosomes come in pairs and they are called ___________.
Homologous pairs
Heterozygous
Both A & B