The hershey chase experiment proved that dna was the hereditary material because what?

The Hershey Chase experiment proved that DNA was the hereditary material rather than protein because they showed that when bacteriophages, which are composed of protein and DNA infect bacteria, their entire DNA enters the cell but most  if not all of their protein doesn't, it is left outside the host cell.

Hershey and Chase subjected the phage attached to bacterium to violent agitation using a blender which removed the empty viral protein shells from the bacterial surface, thus proving viral infection was  DNA related not (viral) protein related.

not necessarily. higher fitness requires the organism to be reproductive successful. for example, an organism at age 10 with 15 offspring is much more fit than an organism at age 15 with only 5 offspring.

thats not a question