Speed and accuracy of the processes involved in sensory input, attention, visual and motor memory, discrimination, comparison, and categorization are components of

Cognitive mechanism

Cognitive mechanism is the hard ware of the mind that shows the neurophysiological structure of the brain created through evolution. The achievement of information and cognitive science developed an understanding that the mind is based on intelligent cognitive methods which are not limited by language and logic only. Speed and accuracy of the processes involved in sensory input, attention, visual and motor memory, discrimination, comparison, and categorization are components of cognitive mechanism.

haploid cells;

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).