<span>epidemiological studies</span>
Answer:
DNA
Explanation:
<h2>What is DNA?</h2>
DNA is a self-replicating material that is present in nearly all living organisms as the main constituent of chromosomes. It is the carrier of genetic information.
fifth tick mark means 0.5mL
so ans is 3.5 mL
The A antibodies will produce A antibodies and the B antibodies will produce B antibodies