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.
Natural gas-fueled power plants consume even less, at 100 gallons/MWh for once-through, 370 gallons/MWh for combined-cycle plants with cooling towers and none for dry cooling. Hydropowerâs typical water consumption is the most significant at 4,500 gallons/MWh, due in large part to evaporation from reservoirs.