D.
A fixed allele is homozygous within a population so D should be the correct answer.
Hope this helps!
<span>Organisms that use photosynthesis (or utilize photons and nutrients from the abiotic environment to survive)</span>
The correct answer will be the second one Growth of a tumor
Answer:
Haploid cells contain a single set of chromosomes. Gametes are an example of haploid cells produced as a result of meiosis. Examples of gametes are the male and female reproductive cells, the sperm and egg cell respectively.
Explanation: