What body systems work with fighting a sickness

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?

Which sentence best describes the relationship between chlorophyll and the chloroplast? a.)chlorophyll is a chemical found in a chloroplast. b.) chloroplast is a chemical found in a chlorophyll. c.) both chlorophyll and chloroplasts are found in animals. d.) both chlorophyll and chloroplasts make carbon dioxide.

What is a group of organisms that are closely related and share similar characteristics