Approximately how many mutations occur naturally in dna per 10,000 bases?

Modern methods indicate that the mutation rate is roughly one mutation per 10,000 genes per generation.

Explanation:

Approximately 1 - 2.

Explanation: I actually learned this. This is a fact.

a motor homunculus represents a map of brain areas dedicated to motor processing for different anatomical divisions of the body.

homunculus represents the importance of various parts of your body as seen by your brain. as a result, they take up a lot of brain space. although the cortical homunculus is a curiosity, penfield's work in mapping the brain's relationship to the body was invaluable.

i think the answer is a.keratin is the pigment responsible for skin color.