Answer: 1. Once an altered gene is placed on an organism it can not be reversed.
2. New organism created by genetic engineering could
present ecological problems.
Explanation:
Looking at the fact that genetic engineering employ the viral vector that carries the functional gene inside the human body system, the repercussion are still unknown. They may even replace an important gene in the human body which could be dangerous to human.
Copying of cellular components and cleaving of cell into two independent cells.
If a cell is not fully-grown or does not have an appropriate cellular environment, it can enter G0 where it can stay for as long as it is necessary.
C. The sensitivity of the retina decreases
