In sickle-cell disease, an allele produces red blood cells with an abnormal shape, which affects many other trats in he same individual. what genetic behavior does this describe?

How are viruses and bacteria different?

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.

In the sentence "a mining company will consider the distribution of coal when deciding how to mine the coal," what does the word distribution mean?