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.
1 The longest day of the year is 15:46 long and the shortest day is 8:13 long. 2  The longest day is 7:33 longer than the shortest day.  There is an average of 2044 hours of sunlight per year (of a possible 4383) with an average of 5:35 of sunlight per day.