Answer:
Explanation:
The aim of the Hershey and Chase experiment was to show that DNA and not proteins are the genetic material.
Proteins are made up of amino acids which also has a nitrogenous base. Since the whole point of the experiment was to differentiate between the two i.e. show which one is the genetic material, it would be impossible to differentiate between DNA and proteins if the nitrogenous base was labelled.
---C---- if brown snails are mostly eaten that most likely means they are more common. If less than snails are eaten then stripedsnails would eventually over populate brown snails and then brown snails would overpopulate striped snails ..... so elminate b and d and snails probably won't go extinct..... so I would have to go with c