What are the basic features of the mechanism of inheritance?

(N/A) $(i)$ Characters are controlled by genes.
$(ii)$ Each gene controls one character.
$(iii)$ There may be two or more forms of the gene (alleles).
$(iv)$ One form may be dominant over the other.
$(v)$ Genes are present on chromosomes.
$(vi)$ An individual has two forms of the gene,whether similar or dissimilar.
$(vii)$ The two forms separate at the time of gamete formation (Law of Segregation).
$(viii)$ The two forms are brought together in the zygote during fertilization.