Just like the Dr. Henry Jekyll & Mr. Edward Hyde from the 'Strange Case of Dr. Jekyll & Mr. Hyde' written by R. L. Stevenson, in our body, there are several genes which behave exactly like them. When these genes are the good guys they are called Proto-Oncogenes and when they are the bad guys they are Oncogenes.

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J. Michael Bishop Harold Varmus
Winners of Nobel
Prize 1989 in
Medicine or
Physiology for “The
Discovery of the

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4. Proto – oncogenes produces five types of
proteins – “ ”
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5. • The five
classes of
Proteins
• “
”
• The first fours
are involved in
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