Several experiments were required to demonstrate how traits are inherited. Which scientist or team of scientists first demonstrated that cells contain some components that can be transferred to a new population of cells and permanently cause changes in the new cells?

a. Griffith

b. Watson and Crick

c. Avery, MacLeod, and McCarty

d. Hershey and Chase

Question

Biology

Mateo Roy

9 May, 22:40

Several experiments were required to demonstrate how traits are inherited. Which scientist or team of scientists first demonstrated that cells contain some components that can be transferred to a new population of cells and permanently cause changes in the new cells?

a. Griffith

b. Watson and Crick

c. Avery, MacLeod, and McCarty

d. Hershey and Chase

+2

Answers (1)

Know the Answer?

Jordon Charles · Answer 1

a. Griffith

Explanation:

Frederick Griffith used two strains of the bacterium Streptococcus pneumoniae. The S strains were pathogenic while the R strains were nonpathogenic. He added the heat-killed virulent bacteria to the live nonvirulent strain and infected mice with it. He showed that the mice developed the disease and were killed. He concluded that a substance from the heat-killed S strains transformed the live R strains into the virulent form that killed mice. However, he could not identify the substance responsible for the process of transformation.