Chimerism is what happens when cells from one twin are present in the other. For example, white blood cells with Y chromosomes would be found in the female twin.
: of, relating to, or involving conscious mental activities (such as thinking, understanding, learning, and remembering). cognitive development/psychology/impairment. [+] more examples [-] hide examples [+] Example sentences [-] Hide examples.
Raise your hand if you need a faster, smarter brain. A simple way to define cognitive skills is to describe them as the underlying brain skills that make it possible for us to think, remember and learn. These are the skills that allow us to process the huge influx of information we receive each and every day at work, at school and in life.