Which restriction enzyme cuts at gaattc

Explain what a zygote is. use the terms egg cell, sperm cell, and fertilization in your explanation.

Why does the earth spin slowly, not faster? is it possible to prove it scientifically? can you prove it with math?

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.