What determines the genotype or an organism

My best bet would be the answer C

Option C is the best answer.

Explanation

Option C is the best one of all the given option. The genotype is the combination of alleles that transfer from parent cell to the offspring. There are three types of genotypes that are homozygous recessive, heterozygous and homozygous dominant. The genotype is responsible for the color of eyes acquired by the offsprings. The abnormal genotype is called the sickle cell cells that do not have enough amount of oxygen .

helicase, i think thats it