It is important that classification principles be standardized in order for all scientists to follow the same set of rules. an example of this is a) the use of latin. b) the adherence to medieval categories. c) leaving viruses out of the modern taxonomic system. d) all living things are classified as either having blood or not having blood.

Development of new communities in disturbed environments, such as a burned or a clear cut forest, is called

Aspecies has evolved an asexual mode of reproduction by having offspring develop from unfertilized eggs. which of the following will be true of this species' response to natural selection? there will be more deaths from natural selection because there is no mutation. there will be less genetic variation from recombination and a risk of not adapting quickly to environmental change. the species will increase in numbers because genetic variation is increased. the species will compensate for loss of genetic variation by hybridizing with other species. there will be fewer deaths from natural selection because sexual recombination always leads to extinction.

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