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.
Third, deer have a reflective layer in the back of their eye called a tapetum that causes their eyes to shine at night. The tapetum acts as a mirror and reflects the light not absorbed by the receptor cells when it enters the eye the first time back across the cells for a second chance.n other words, deer get to use the same light twice while humans get to use it only once. A fourth difference found between a deer's eye and a human's gives us some idea of their ability to see UV light. The human eye is protected by a filter that blocks about 99 percent of UV light from entering the eye.