Q1. If muscles biopsies were taken from the legs of a world-class marathon runner and a typical couch potato, which would you expect to have a higher density of mitochondria? Why? What about the muscle biopsy from the biceps of a weight lifter.

Q2. What is the dissimilarity between germline mutations, and somatic mutations which can be transferred and which is more severe also which sequence in these letters could be set up to because point mutation that would not affect a person severely sequence.