Why reason best illustrates why hershey and chase chose to use viruses in their experiments?

Hershey and Chase were also able to prove that the DNA from the phage is inserted into the bacteria shortly after the virus attaches to its host. Hershey and Chase concluded that DNA, not protein, was the genetic material.

They used viruses because they infect a bacterium by inserting their DNA, resulting in the bacteria reproducing the virus.

Explanation:

They did experiments to confirm if DNA is the base of the genetic material, for this they used a phage, which has only one capsid where the genetic material is found. This experiment confirmed that DNA was the support of the hereditary material.

9.9 years

a = p(1 + rt) . . account balance after time t at rate r starting with principal p

3000 = 2500(1 + 0.0202t) . . filling in the given numbers

1.2 = 1 + 0.0202t . . divide by 2500

0.2 = 0.0202t . . . subtract 1

0.2/0.0202 = t ≈ 9.901

it will take about 9.9 years for the account balance to reach $3000.