Hemiplegia is the paralysis that affects one half side of the body. Hemiplegia affects an arm and a leg on the same side and it can be either left or right side of the body. Hemiplegia is caused due to injury to the brain area that controls movements of body parts such as trunk, limbs, and face. Right hemiplegia is caused by injury to the right side of the brain while left hemiplegia is caused by injury to the left side of the brain. The level of hemiplegia of paralysis differs from an individual to another and it may change over time.
some traits become more common, others less. ... The traits that become more common are the ones that are “adaptive” or “increase fitness” (that is, a creature's chances of living longer and producing more offspring).
