Final answer:
The experiments by Hershey and Chase using viruses and bacteria confirmed that DNA is the genetic material.
Step-by-step explanation:
The evidence that supports the claim that DNA is the genetic material is the experiments done by Alfred Hershey and Martha Chase in the 1950s.
They used viruses and bacteria to show that DNA carries the hereditary information. They labeled the DNA and proteins in viruses with different radioactive elements and found that only the DNA was inserted into bacterial cells.
This confirmed that DNA is the molecule responsible for passing on genetic information. Another piece of evidence is the discovery that DNA has a complex base composition, indicating that it is not a simple sequence and that it is indeed the genetic material.