The fraction of a population who die from a specific disease is called mortality rate. morbidity rate. attack rate. incidence rate.

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

Differentiation of cells changes the nucleic information. true false

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.