The genotype of an individual represents the total number and types of genes and the alleles of each gene present in the nuclei of its cells. In humans, the presence of two copies of X chromosomes makes an individual female. However, some individuals have two copies of X chromosomes but have masculine features. Similarly, some individuals have one X and one Y chromosomes in their cells. These individuals are genotypically males. But they have some feminine features. This makes them phenotypically female. Phenotype is the morphological expression of genotype.
These are the inner folds of the stomach. The folds are pronounced in an empty stomach that is not yet distended by food. They also increase the surface area in which the food is in contact with digestive enzymes produced by the stomach walls.
