The Y chromosome does not cause color blindness. Colorblindness is a defective gene on the X chromosome. Females have 2 x chromosomes, thus one can serve as a backup for a defective gene. However, the Y chromosome in males is almost totally defective, thus does not have a backup.olorblindness is a defective gene on the X chromosome. Females have 2 x chromosomes, thus one can serve as a backup for a defective gene. However, the Y chromosome in males is almost totally defective, thus does not have a backup.
Kilwa Kisiwani (also known as Kilwa or Quiloa in Portuguese) is the best known of about 35 medieval trading communities located along the Swahili Coast of Africa.
Tenskwatawa (the Prophet), Shawnee religious figure (b Lalawethika in Shawnee territory near the Great Lakes, 1775; d at Prophetstown, near Kansas City, Missouri,1836). Tenskwatawa was the son of Puckeshinwa, a Shawnee war chieftain, and Methoataske, a Creek woman, and the younger brother of Shawnee war chief Tecumseh.The two brothers fought together in the War of 1812. Tenskwatawa was originally named Lalawethika (Noisemaker), and was born shortly after the death of his father.enskwatawa was the son of Puckeshinwa, a Shawnee war chieftain, and Methoataske, a Creek woman, and the younger brother of Shawnee war chief Tecumseh. The two brothers fought together in the War of 1812.