Inbred strains (also called inbred lines, or for animals linear animals) are individuals of a particular species which are nearly identical to each other in genotype due to long inbreeding.
Freebase(3.00 / 2 votes)Rate this definition: Sunlight. Sunlight is a portion of the electromagnetic radiation given off by the Sun, particularly infrared, visible, and ultraviolet light. On Earth, sunlight is filtered through the Earth's atmosphere, and is obvious as daylight when the Sun is above the horizon.
Light is one type of radiant energy. Sunshine is radiant energy, which provides the fuel and warmth that make life on Earth possible. Heat travels from the sun by a process called radiation. Radiation is the transfer of heat by electromagnetic waves.