The failure of chromosomes to separate properly during meiosis is known as and can result in a gamete with extra or missing chromosomes. This error in meiosis is the most common cause of .

Why do you think water is so important to living things

Secondary pollutants are more harmful than primary pollutants. select the best answer from the choices provided ot of

Read the following scenario to answer the following question. in some zoos, rare crosses between a male lion and a female tiger have produced hybrid offspring called "ligers." male ligers are sterile but some female ligers are fertile. in the wild, lion and tiger ranges do not naturally overlap, making such a cross unlikely. furthermore, the solitary behavior of tigers and the social organizations of lions create behavioral differences. applying the biological species concept, the sterility of ligers reveals that a. lions are probably a subspecies of tigers b. tigers and lions are the same species c. a new species called "ligers" is forming d. tigers and lions are separate species