D.
A fixed allele is homozygous within a population so D should be the correct answer.
Hope this helps!
The answer to this question is the term rhizome. A rhizome is a stem of a plant that is growing underground and is growing horizontally. It is also known as rootstocks. The rhizome's function in the plant is that it is used to store starches and protein that enables the plant to grow underground.
Answer: your answer is C
Explanation: I had the same problem
Answer:
respiration, waste production, food intake, cells, breathing
