14. The gap between the best male and female athletes has shrunk sharply since when year? O Prior to the 1900s.
Around the time that Title IX was passed.
The year that women were first allowed to participate in the Olympics.
None of the above because the gap has not shrunk.

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

What is the key to the recognition of codominance?

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.