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.
homocystinuria. an inborn error of metabolism of sulfur amino acids due to lack of the enzyme cystathionine synthase; it is characterized by homocystine in the urine and by mental retardation, hepatomegaly, ectopia lentis (displacement of the lens), and cardiovascular and skeletal disorders.