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.
The Sun is the brightest and most familiar object in the sky. Life on Earth would not be possible without it: How sunlight is created The Sun has no sharply defined surface like that of the Earth, because it is too hot to be anything but gas. Rather, what appears to us as the surface is a layer in the Sun's atmosphere, the photosphere (sphere of light) which emits light (radiates) because ot its high temperature.