The blood vessel itself, which is more than just an interior lining but also has muscle in it to help it vasoconstrict or vasodilate, is at the blank level of organization

from the original order (top to bottom) the new order will go

1 (founder)

4 (hawk)

2 (mutate)

3 (next generation)

regents of the university of california v. bakke, 438 u.s. 265 (1978), was a landmark decision by the supreme court of the united states. it upheld affirmative action, allowing race to be one of several factors in college admission policy.