Several different species of small nocturnal primates called, bush babies live in the woodlands of Africa. While several different species of bush babies often live in the same habitat they cannot interbreed because male bush babies have genitalia that will only fit the genitalia of females belonging to the exact same species. This is an example of which of the following?a. pre zygotic barrierb. distruptive selectionc. post zygotic barrierd. sexual selection

The picture represents a structure of the respiratory system. which is the function of this structure? to bring air into the body to exchange oxygen with carbon dioxide to carry air to the lungs to release oxygen from the body

Which hormone is used by both males and female?

Imagine a self-reactive t cell that has not undergone clonal deletion in the thymus (that is to say, it has escaped central tolerance). if it encounters self antigen in the absence of an infection or inflammation, what will happen to this self-reactive t cell? (select two answers) (a) the t cell undergoes clonal expansion. (b) the t cell gains effector functions. (c) the t cell undergoes apoptosis. (d) the t cell becomes activated. (e) the t cell becomes anergic.