Answer: It is A near the back just above the occipital
Explanation:
23 individual chromosomes, 46 total. Cannot be more
“Genes and environmental effects are often part of the explanation. “
“...disease-causing alleles of one gene may be suppressed by alleles of another gene elsewhere in the genome, or a person's overall health may influence the strength of a disease phenotype.”
https://www.khanacademy.org/science/high-school-biology/hs-classical-genetics/hs-non-mendelian-inheritance/a/polygenic-inheritance-and-environmental-effects
Mitochondrion is found outside of nucleus in animal cell .
So , i think the answer is B.