Answer:
A. used to pass on genetic traits
Explanation:
I know things.
There are so many examples for that in different areas, like biology experiment carried out in our lab recently.
Here's one link : https://www.creative-biogene.com/Services/Biosimilar-Cell-Line-Development.html
In the soil, some ______ convert nitrogen to a form that can be used by plants.
prokaryotes