A mother who is blood type O can only pass an O allele to her son or daughter. A father who is blood type AB could pass either an A or a B allele to his son or daughter. This couple could have children of either blood type A (O from mother and A from father) or blood type B (O from mother and B from father).
At night, humans can use flashlights to spot animals that possess tapetum lucida by causing a phenomenon called eye shine.. Eye shine is the iridescent glow observed in animals when light is shone into their eyes, which floods the eye with light that is then reflected by the tapetum lucidum.
If you have ever caught a deer in your headlights at night, you may have noticed an eerie, luminescent glow in the animal's eyes. This phenomenon is due to a series of special adaptations designed to help deer see in low-light conditions, and many other animals share some of these characteristics.