DNA samples are added into wells with the help of electric current.
<h3>How dna samples added to the wells?</h3>
DNA samples are added into wells at one end of a gel whereas an electric current is applied to pull them through the gel. DNA fragments are negatively charged, so they move towards the positive electrode.
So we can conclude that DNA samples are added into wells with the help of electric current.
Learn more about dna here: brainly.com/question/16099437
The correct answer is A) and B). Hope this helps.
Answer:
The answer is C homologous chromosomes
The liver is the main site
Circadian rhythms ....its just behavior that is repeated over 24 hours