He discovered that finches in different environments had different shaped beaks
The answer is cell membrane
Answer:
B. Prevents growth of new plant species.
Answer:
c) The largest problem is that single viruses may create multiple plaques, resulting in overestimates of the number of viruses present.
Explanation:
- Plaque-based assays are the accepted method used for finding virus concentration in terms of infectious dose.
- Viral plaque assays determine the number of plaque forming units (pfu) in a virus sample, which is one measure of virus quantity.
