The hardy–weinberg equilibrium model states that allele and genotype frequencies in a population will remain constant from generation to generation in the absence of other evolutionary influences. because one or more of the influences listed above are typically present in real populations, the hardy–weinberg model describes an ideal condition against which the effects of these influences can be analyzed. of the influences listed, which would not cause a change in allelic frequencies or genotype? a) mutation b) genetic drift c) mitotic divison d) sexual selection

the abdomen (less formally called the belly, stomach, tummy or midriff) constitutes the part of the body between the thorax (chest) and pelvis, in humans and in other vertebrates. the region occupied by the abdomen is termed the abdominal cavity. the stomach secretes acid and enzymes that digest food. ridges of muscle tissue called rugae line the stomach. the stomach muscles contract periodically, churning food to enhance digestion. the pyloric sphincter is a muscular valve that opens to allow food to pass from the stomach to the small intestine.

the correct option is option d