Question

question 7 of 10
how did alfred hershey and martha chases experiments using radioactive labeling support averys findings?
a. they showed that traits are coded for by rna.

b. they showed that the material that carries genetic information is dna.

c. they showed that proteins carry genetic material.

d. they showed that carbohydrates carry the code for inherited traits.

Explanation:

Avery's work suggested DNA was the genetic material. Hershey and Chase used radioactive labeling (³²P for DNA, ³⁵S for protein) with bacteriophages. They found radioactive DNA (³²P) entered bacteria, while radioactive protein (³⁵S) stayed outside. This confirmed DNA, not protein, carries genetic info, supporting Avery. Option A is wrong (they showed DNA, not RNA). Option C is wrong (they showed proteins do not carry genetic material). Option D is wrong (carbohydrates aren't genetic material carriers). So B is correct.

Answer:

B. They showed that the material that carries genetic information is DNA.