The answer is B since you have to be able to prove/elaborate on the topic sentence
Answer:
Mitochondrial DNA is circular, so it doesn't shorten when it replicates unlike the rest.
<span>The area of the brain responsible for memory (and, thus, also memory problems like amnesia) is a tiny area called the hippocampus. The hippocampus allows us to make short-term memories into long-term memories.</span>
I'm not sure how exactly you wanted this question to be answered. You're either talking about the symmetry where animals would have two legs or two arms for example and thus producing a pair of each muscle on both sides of the body, or you're refering to the development of agonistic and antaonistic muscles where each of them served a different purpose; either extending or contracting.
Schwann - In 1839, he cells are the basic unit of animal structure
Schlieden - In 1838, he discovered cells are the basic unit of plant structure
Hope this helps
