Multicellular is the word you're looking for ;-)
This situation is the perfect example of the random process that is called genetic drift. A minor, usually, form of evolution that works best in small <span>populations or in situation as you have described above.
I hope you get this answer right!
Have a great day!:DDDD :)!</span>
The theme is the writer's view of or comment about the subject. The answer to your question is D. I hope this is the answer that you are looking for and it comes to your help.