If the phenotype affecting reproduction or survivorship is genetically based, then selection can remove genotypes indirectly by removing phenotypes.
ABO blood group systems areblood types A, B, AB, or O in human beings blood types called polymorphism, which is defined as a genetic locus with two or more alleles that occur in large frequency in a given population. ABO blood group is not only a significant blood factor in clinical applications entailing blood transfusions but also proving to be a salient asset for determining human migration patterns and origins. Clinal distributions are generally thought to reflect micro evolutionary influences of natural selection and/or gene flow. A clineis a gradual change in the frequency of a trait in populations dispersed over geographical space.
Lactose is the disaccharide component in milk. This component consists of glucose and galactose, which are monosaccharides. Lactase is required so as to digest lactose. The production of lactase production is known to decrease with age, a process that results in lactose intolerance. High concentrations of lactose are found to occur naturally in dairy products as well as in processed food. Lactose intolerance occurs in individuals with low or insufficient levels of lactase, which is an enzyme responsible for the catalysis of lactose. This is an hydrolysis process where lactose is broken down into glucose and galactose in the digestive system. Adaptability is the ability to rapidly cope to changing environmental
conditions, which has made it possible for organisms to survive in most regions of the world. Acclimatization involves a change in the population of a species. When traveling to high altitudes, our bodies adjust so that there is enough oxygen to our cells. A healthy acclimated person can tolerate extended exposure to virtually any natural weather-related heat stress. Where chronic heat exposure induces a fairly uniform pattern of thermoregulatory adjustments, chronic cold exposure induces three different patterns of adaptation. The low air pressure found at high altitudes makes it difficult for oxygen to be supplied in the vascular system hence causing high altitude sickness. Almost all living primates have prehensile hands and feet, and most have five digits on these appendages. Primates have particularly flexible and limber shoulders and hip joints. Primates have a nail on the first digit. Primates also possess a clavicle, or collarbone. All primates have the tendency to be erect. Most species stand on the two hind legs like humans. Examinations based on arboreal hypothesis reveal that claws, which are used as climbing tools, are superior to bare hands, fingernails and feet. This makes them beneficial for the purposes of transporting larger bodies through tree branches. In relation to visual predation hypothesis, stereoscopic vision is used in estimating the distance and size of food sources. Orbital convergence of the eyes results in a conditions known as reduced olfaction. Niche separation between species form stable mixed species groups to examine the partitioning of resources and how the separation affects the stability of such groups. Ecological theory states that whenever two closely related species having strongly equally ecological requirements occur sympatrically, a lead into interspecific competition that drives one of the two species to local extinction or character