The study of genes and inheritance is called genetics. There are two types of genes and these are recessive and dominant.
The correct answer is mentioned below.
What is DNA?
DNA stands for deoxyribose nucleic acid and stores all the genetic information which transfers to the next generation.
Hershey and chase, use radioactive sulfur and phosphorus which is used by the virus protein coat with the sulfur and the DNA molecule with the phosphorus. When a virus attacks the bacteria it is found that the bacteria has radioactive phosphorus but not sulfur which proves the DNA is the genetic material.
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