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.
Archaeologists make 'exciting' discovery in Alamo dig. The excavation at the Alamo site (Texas General Land Office). Archaeologists digging at the Alamo have discovered an adobe wall that may provide clues to the famous siteâs Spanish Colonial history. The wall, which is about 23 inches below the flagstone surface of San Antonio's Alamo Plaza, was discovered July 22 near where historians think the west wall of the complex was built. Experts are working to locate the compoundâs original walls.