Some groups of animals, predominantly those that are parthenogenetic, arose as a result of polyploidy. Proof of the role of polyploidy in evolution is given by the polyploid series, in which species of a single genus or family form a euploid series with increases in chromosome number that are multiples of the basic haploid number.
A Brief History of an Old Building: The Alamo The viceroy of Mexico authorized a mission in 1716, but it was not until 1744 that the first stones of the present Alamo were laid. Priests had the Catholic mission San Antonio de Valero built to use to convert the native Indians.he viceroy of Mexico authorized a mission in 1716, but it was not until 1744 that the first stones of the present Alamo were laid. Priests had the Catholic mission San Antonio de Valero built to use to convert the native Indians.
The Alamo (1718) The first and today the most widely known of these missions was San Antonio de Valero, commonly called the Alamo. It was established in 1718 as a way station between missions already existing in East Texas and other base missions in Mexico. It was well over 100 years old when it became the focal point for the Battle of the Alamo, fought March 6, 1836. The Alamo will always be remembered and associated with that battle. San Jose (1720)