The fundamental difference between the two methods is that molecular cloning involves replication of the DNA in a living microorganism, while PCR replicates DNA in an in vitro solution, free of living cells.
Costs. Becoming a doctor is not cheap. Depending on your location and specialty, medical school alone can cost between $50,000 and $150,000, and thatâs only tuition.
Cancel. Becoming an optometrist requires four years of undergraduate college and four years of optometry school. Find out how optometrists can expect to make between $85,000 a year and $115,00 a year with information from a family doctor in this free video on medical careers.