1. Organisms of the same species at the same level of descent from a common ancestor

natural selection
adaptation
trait
population
generation

that is wrong, its not thymus.

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.