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 cerebral cortex is divided into sensory, motor and association areas. Sensory areas receive sensory input, motor areas control movement of muscles.Association areas are involved with more complex functions such as learning, decision making and complex movements such as writing.The central sulcus divides the primary sensory and motor areas.Both the sensory cortex and the motor cortex have been mapped out according to what part of the body it controls.ssociation areas are involved with more complex functions such as learning, decision making and complex movements such as writing. The central sulcus divides the primary sensory and motor areas. Both the sensory cortex and the motor cortex have been mapped out according to what part of the body it controls.