In theory, a biological race is a geographically isolated subdivision of a species.Humanity (Homo sapiens) lacks such races because
A)although humans exhibit biological differences, these are only skin deep.
B)human populations have experienced a type of controlled breeding that is distinct from that experienced by dogs and roses.
C)human populations have not been isolated enough from one another to develop such discrete groups.
D)they are politically incorrect.
E)humans are less genetically predictable than the animals and plants that are susceptible to domestication.

Question

Quizplus · Accepted Answer

Human populations have not been isolated enough from one another to develop such discrete groups. While there are some biological differences between human populations, they do not meet the criteria for separate races as they are not geographically isolated and have significant gene flow between populations.

In Theory, a Biological Race Is a Geographically Isolated Subdivision