slide 1 of 5. A polygenic trait, is a trait that nonallelic genes control. These traits result from one or more genes contributing to the phenotype. An individual's physical appearance is determined by chromosomal inheritance and genotypic ratio. This phenomenon is known as Mendel's Laws of Inheritance.
, cycle. Water molecules continuously move from location to location in this cycle. The water cycle is important to weather and climate and, ultimately, to all life on Earth. The water cycle is driven primarily by the energy from the sun. This solar energy drives the cycle by evaporating water from the oceans, lakes, rivers, and even the soil. Other water moves from plants to the atmosphere through the process of transpiration.
So, to recap, water moves through a cycle on Earth called the water cycle, sometimes referred to as the hydrologic cycle. The water cycle begins with surface water, which is represented by rivers, lakes, and oceans. Next it moves through evaporation, or the process by which water is converted from its liquid state to a gaseous state called water vapor.