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.
Scientists find blinking eyes mean the mind is wandering. Ever get the feeling that the person youâre talking to isnât being entirely attentive? Now you can tell for certain â because scientists have found a way to prove whether someone is listening to you. All it takes is a look into their eyes. When a person blinks, it is a sign that their mind is wandering, a study shows. The researchers think that blinking sets up tiny physical barriers that help to shut off the outside world.