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.
wikiHow to Become a Doctor. To become a doctor, you must be prepared for at least 7 to 9 years of hard work. You need to obtain a Bachelor's degree first, then attend medical school and take part in rotations, residencies, and exams. Once you complete medical school, choose a specialty and train for it.