They are called adult stem cells
Answer:
Explanation:
An organism can't chose to have a mutation because it depends on the way they are born. If they are missing some type of mineral, (Protein, Vitamin, etc.) they will have a mutation because they're missing that. Well, something similar to a mutation is natural selection and genes. For example, there are some short and tall giraffes. The tall ones can reach the tree and the short ones can't so they die and the tall ones can reproduce and their offspring will inherit that trait
<span>The real energy comes from the sun, which is solar (light) or from radioactive</span>
Cytosine
(C) - both;
Thymine (T) – DNA;
Uracil (U) - RNA.
Adenine
(A) - Both
Guanine
(G) - Both
These are the letters that we use to represent the nitrogenous base pairs that make up and thus define a nucleotide
The most correct answer for the above question is the Arachnoid villi. They are tufts of arachnoid membrane invaginated into the dural sinuses through which cerebrospinal fluid enters the venous system. They act as one way valves and they normally penetrate the overlying dura and invaginate through the walls of the superior sagittal sinuses and other venous structures.