The following biochemical pathway can produce plants with 3 different phenotypes for color; White -> Blue -> Red A B A dominant allele is required at both genes A and B to produce the red color. Which of the above phenotypes would be represented by the '4' in the 9:3:4 recessive epistasis ratio?

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

Consider the activity and specificity of the three enzymes.pepsin is most active in the human and to digest

Which of the following is directly affected by the cardiovascular system?