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.
This lens causes light to diverge slightly before it reaching the eye. When farsightedness (called hyperopia) is present, a person is able to see far away objects well but has difficulty seeing close up objects. Light rays become focused behind the retina.Possible causes include eyeballs that are too short or by lens systems that have too little focusing power.his lens causes light to diverge slightly before it reaching the eye. When farsightedness (called hyperopia) is present, a person is able to see far away objects well but has difficulty seeing close up objects. Light rays become focused behind the retina.