How do genes and chromosomes share similarity from the point of view of genetical studies?

(N/A) Similarities between Chromosomes and Genes are as follows:
$(i)$ Both occur in pairs in diploid organisms.
$(ii)$ Both segregate during the time of gamete formation (meiosis) such that only one of each pair is transmitted to a gamete.
$(iii)$ Both pairs segregate independently of each other during gamete formation.