Question

what did alfred hershey and martha chase conclude from their experiments using radioactive labeling? a. genetic information is carried by rna. b. traits are coded for by dna. c. carbohydrates carry genetic material. d. proteins carry the code for inherited traits.

Explanation:

Alfred Hershey and Martha Chase conducted experiments using radioactive labeling. They labeled the DNA and proteins of bacteriophages (viruses that infect bacteria). By tracking where the radioactivity ended up after the phages infected bacteria, they found that the DNA (not the proteins) entered the bacteria and was responsible for directing the production of new phages. This showed that DNA, not proteins (as was previously thought by some), carried the genetic information. RNA was not the focus of their experiments in the context of this conclusion. Carbohydrates are not known to carry genetic material. Their work supported the idea that DNA codes for traits (as it is the genetic material that gets passed on and directs biological functions).

Answer:

B. Traits are coded for by DNA.