How are two different species most likely to evolve from one ancestral species? ?
a. phylogenetically, due to heterozygote advantage in hybrids
b. sympatrically, by a point mutation affecting morphology or behavior
c. allopatrically, after the ancestral species has split into two populations mastering bio website

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".

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.