The correct option is C Law of independent assortment
Genes that are on the same chromosome, or "linked", do not assort independently, but can be separated by recombination. Two genes close together on the same chromosome tend to be inherited together and are said to be linked.
Linked genes can be separated by recombination in which homologous chromosomes exchange genetic information during meiosis; this results in parental, or non-recombinant genotypes, as well as a smaller proportion of recombinant genotypes.
Geneticists can use the amount of recombination between genes to estimate the distance between them on a chromosome.