Which type(s) of cells have genetic material that is contained in a nucleus?
- <em>D</em><em>.</em><em> </em><em>Both</em><em> </em><em>plants</em><em> </em><em>and</em><em> </em><em>animal</em><em> </em><em>cells</em><em> </em>
<u>Eukaryotic cells are those cells that retain their genetic material inside the nucleus. They have well defined nucleus. Plants and animals cells are eukaryotic cells.</u><u>.</u><u>.</u><u>~</u>
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.
The answer is; cell surface receptors that are recognized as antigens by the recipient's immune system.
Therefore the organ is attacked as a foreign substance . This is why organ transplants are given by the closest family member to reduce the antigen variability that causes transplant rejection. Tissue typing is done to ensure that the organ or tissue is as similar as possible to the tissues of the recipient.
Answer:
Coelenterates are the first invertebrates to develop a true nervous system.
Explanation: