Answer:
mutation in DNA
Explanation:
Mutations are changes in the genetic code that can occur in many ways. Each time a cell divides, say, DNA must be copied into two copies, one copy for each new cell. Although this copying is very precise, it is still not perfect - for about every billion accurately copied databases, one is mistranslated.
Another source is DNA damage, which can occur spontaneously through the normal life of the cell, or through external toxins or negative influences (ultraviolet radiation, for example). Through evolution, cells have developed a very complex system for repairing changes in DNA, but these systems not only have limitations but can sometimes cause additional errors themselves.
Schizophrenia is a mental disorder defined as chronic and severely debilitating as the patients usually are "lost in touch with reality."
Schizophrenia has both positive symptoms (added) and negative symptoms (lack of). Positive symptoms include hallucinations (<em>adding </em>unreal imagery) and uncontrollable thoughts. Negative symptoms include apathy <em />(<em>lack of </em>concern or enthusiasm), alogia (<em>lack of </em>speech), and blunted affect (<em>lack of </em>facial expression). Both positive and negative symptoms affect the intellectual functioning of an individual with schizophrenia.
Answer:
The answer would be A
Explanation:
I took the test last year
Answer:
The nervous system is composed predominantly of neural tissue.
Explanation: Anatomist study anatomy, the study of the structure of organisms or their parts. By observing the structure of the nervous system, anatomist will tell that it is composed predominantly of neural tissue. So, he observed the structure of one part of an organism.
