What is the relationship between nucleic acids and chromosomes?
nucleic acid, deoxyribonucleic acid, is monomer for DNA and DNA is compactly packed into Chromosomes
Deoxyribonucleic acid is monomer for the DNA in the organism. It holds the information about the proper functioning of various aspects of an organisms' life. DNA for most of organisms is very large that it is very difficult to organize it if kept randomly.
So, to organize the large DNA, DNA is compressed into chromatin (10nm thick fibre) which is then compressed to thicker chromatin (30nm thick fibre) then again it is compressed into the form of chromosome.
Figure shows how DNA (nucleic acid) is packed into chromosome
in other words nucleic acid is the basic unit of chromosome.