Using a Punnett Square. A Punnett Square can help determine the probability that offspring will have a particular phenotype or genotype. Example: The possible offspring outcomes for parents who are both carriers of a cystic fibrosis mutation.
Pyrokinesis is an alleged psychic ability allowing a person to create and control fire with the mind. There is no conclusive evidence that pyrokinesis is a real phenomenon. Alleged cases are said to be hoaxes, the result of trickery.
Pyrrolizidine (pie-row-LIES-ah-dine) is an alkaloid which is a chemical many plants make that is incompatible with mammalian and avian life. Basically it is how those plants, as a group long-term, keep from being eaten into extinction. Itâs a strategy of Eat Us And You Die.