Which is not a way that natural selection can affect the distribution of phenotypes for polygenic traits? directional seletion
stabilizing selection
disruptive selection
geographic selection

The distribution of related animals and plants across the world

Ascientist is conducting an investigation that involves water, silver, carbon dioxide, and oxygen gas which group of statements best describes all of the materials he is using in the investigation?

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