When a lysosome fuses with a vacuole, A. they both return to the Golgi apparatus. B. division begins. C. they both disappear. D. protein synthesis begins. E. its contents are digested.

E. its contents are digested.

Explanation:

Basically, in human body's cell have organelles which are responsible for waste removal. Lysosome is one of the organelles which digest and remove the waste by digestive enzymes.

Now, what happen is that, vacuole consists of undigested material which are broken down by lysosomes only. That's why when lysosomes fuses with vacuoles then they pass the digestive enzymes into vacuole which will digest its contents.

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.