Bacterial cell shape? a. rod-like c. spherical b. spiral d. all of the above

One gene can influence trait(s). one trait can be determined by gene(s).

Which best describes a gene? a. a sister chromatid b. a chromosome c. a tetrad d. a piece of a chromosome

Hershey and chase confirmed that dna, not protein, was the genetic material. how do the results of their two experiments support this conclusion?