A wiperless windshield is a windshield that uses a mechanism other than wipers to remove snow and rain from the windshield. The concept car Acura TL features a wiperless windshield using a series of jet nozzles in the cowl to blow pressurized air onto the windshield.
Half sibling A half sibling (half brother or half sister) is a sibling with one shared biological or adoptive parent. A half sibling that shares the same mother (but different fathers) is known as a uterine sibling, whereas one that shares the same father is known as an agnate sibling.
Each sibling gets the same distribution of parental DNA in terms of percentages. That is, each sibling gets half of their DNA from the mother and half from the father*. However, each sibling gets different parts of the two parents' DNA. It always adds up to 50:50, but if you have a gene where the father has the two versions A and a and the mother has the two versions B and b, you could have siblings that end up with AB, Ab, aB, or ab.