frequency is 100 percent, describe the genetic variation for that trait in the population. If an allele frequency is 100% then there is no genetic variation for that trait. Normal distribution This type of distribution, in which the frequency is highest near the mean value and decreases toward each extreme end of the range, is called a normal distribution.
The Cerebrum: The cerebrum or cortex is the largest part of the human brain, associated with higher brain function such as thought and action. The cerebral cortex is divided into four sections, called lobes: the frontal lobe, parietal lobe, occipital lobe, and temporal lobe.
The term cerebral cortex typically refers to all 4 lobes in the human brain (occipital, parietal, temporal, and frontal). It would be impossible to say what results from general cerebral cortex damage as the brain carries out so many different functions which are not evenly dispersed across the cortex.