Two parents with brown eyes have two children with blue eyes. assume that only one gene for eye type is involved. how is this possible? defend your answer by presenting possible genotypes for the individuals in the scenario.

The number of living organisms in a particular area is

The instructions for making proteins come originally from

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.