Genetic markers are DNA sequences with known physical locations on chromosomes. They are points of variation that can be used to identify individuals or species, or may be used to associate an ...
Black holes are points in space that are so dense they create deep gravity sinks. Beyond a certain region, not even light can escape the powerful tug of a black hole's gravity. And anything that ...
A preauricular pit is a tiny hole in front of the ear. Also called a preauricular sinus or fistula, it may appear more like a dimple or a piercing in an odd place. A preauricular pit occurs as a ...
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