The Question: My wife and I have argued this, and I've had trouble finding the answer. Which sex carries the genes to determine the sex of the offspring...…
(Encyclopedia) Dausset, JeanDausset, JeanzhäN dōsĕˈ [key], 1916–2009, French immunologist. A physician specializing in blood diseases, he was the laboratory director of the National Blood Transfusion…
Source: Archive Photos Sinatra continued to wow critics and fans when he made the leap to film and emerged as a serious actor. His role as doomed soldier Angelo Maggio in 1953's poignant portrait…
DECANTING GOLDDISTILLATIONFILTRATIONCHROMATOGRAPHYFIND OUT MOREThe substances in a mixture are separated by the differences in their physical properties, such as their particle size. The more…
—Borgna BrunnerVital Stats of the Universe In one of the most important cosmological discoveries in years, NASA scientists have captured the most precise image of the universe, shedding light on…
(Encyclopedia) Tay-Sachs diseaseTay-Sachs diseasetāˈ-săksˈ [key], rare hereditary disease caused by a genetic mutation that leaves the body unable to produce an enzyme necessary for fat metabolism in…
IntroductionHistorical Development and Mechanisms of Evolution and Natural SelectionIntroductionEarly Theories of EvolutionNatural Selection and EvolutionNatural-Selection MechanismsDid a giraffe's…
(Encyclopedia) cancer, in medicine, common term for neoplasms, or tumors, that are malignant. Like benign tumors, malignant tumors do not respond to body mechanisms that limit cell growth. Unlike…
(Encyclopedia) crossing over, process in genetics by which the two chromosomes of a homologous pair exchange equal segments with each other. Crossing over occurs in the first division of meiosis. At…
