Prairie. Prairies are ecosystems considered part of the temperate grasslands, savannas, and shrublands biome by ecologists, based on similar temperate climates, moderate rainfall, and a composition of grasses, herbs, and shrubs, rather than trees, as the dominant vegetation type.
Triple X Syndrome (47,XXX) Triple X Syndrome is a genetic disorder that alters the sex chromosomes. The X chromosome, along with the Y chromosome, determine the sex of an individual. Most males have only one X chromosome and one Y chromosome, while most females have two X chromosomes.
They are the chromosomes that determine gender, or sex chromosomes as they are often referred. Females have two X chromosomes, while males have an X and a Y chromosome. These chromosomes play a huge role in Rett Syndrome. Rett Syndrome is caused by a genetic mutation in one X chromosome. A gene known as MECP2 (pronounced meck-pee-two) found on the X chromosome, not only supplies essential MeCP2 proteins to the brain necessary for proper development, but also regulates other genes.