The process of cumulative change at the level of DNA; RNA; and PROTEINS, over successive generations.
The relationships of groups of organisms as reflected by their genetic makeup.
The process of cumulative change over successive generations through which organisms acquire their distinguishing morphological and physiological characteristics.
The sixth planet in order from the sun. It is one of the five outer planets of the solar system. Its twelve natural satellites include Phoebe and Titan.
The physical effects involving the presence of electric charges at rest and in motion.
Energy transmitted from the sun in the form of electromagnetic radiation.
Irradiation directly from the sun.