True or false: The drug Salvarsan was used as treatment for syphilis in the early twentieth century.

Aboy with an extra x chromosome probably has which of the following syndromes?

How are gross production and net production different? a. net production is always greater than gross production. b. net production is always less than gross production. only animals have net production. d. only plants have net production. select the best answer from the choices provided

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