What are chromosomes? Can you explain how in sexually reproducing organisms the number of chromosome in the progeny is maintained?

Hello Amartya, A chromosome is a DNA molecule with part or all of the genetic material (genome) of an organism. Prokaryotes usually have one single circular chromosome, whereas most eukaryotes are diploid, like humans. Chromosomes in eukaryotes are composed of the chromatin fibre. Chromatin fibre