A hormone produced by the pyloric gland area of the stomach that stimulates the secretion of gastric acids. A ring of muscle at the junction of the esophagus and the stomach that remains closed except during swallowing to prevent the stomach contents from entering the esophagus. The sum of all the genetic information carried by members of a population. Sequence of DNA bases usually code for a polypeptide sequence of amino acids . The separation of a population's gene pool from the gene pools of other populations due to mutation , genetic drift, and selection.
Continued divergence can lead to speciation.
The study of the structure and function of genes and the transmission of genes from parents to offspring. The set of genes carried by an individual. The set of genes shared by members of a reproductive unit such as a population or species. The total area occupied by a population. Commonly called pregnancy.