In the context of the difference threshold, is the principle that two stimuli must differ by a constant proportion to be perceived as different.

Secondary pollutants are more harmful than primary pollutants. select the best answer from the choices provided ot of

Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population.b) the separated population is small, and genetic drift occurs.c) the isolated population is exposed to different selection pressures than the ancestral population.d) different mutations begin to distinguish the gene pools of the separated populations.e) gene flow between the two populations is extensive.

Has anyone taken the genetics unit test in connexus? not looking for answers, just a little bit what to expect and some with studying.