In some large groups of plants, including dandelions, oaks, and willows, the biological species concept is complicated because the process of _____ allows gene flow to occur between good _____ that can be easily distinguished based on appearance
A. hybridization; morphospecies
B. hybridization; ecological species
C. allopatric speciation; ring species
D. polyploidy; evolutionary species
E. polyploidy; ring species
A
You might also like to view...
Biosynthesis of vitamin K (menaquinone) by ________ spp. inhabiting the ________ of humans is a potentially important mutualistic relationship for human health
A) Bifidobacterium / intestinal tract B) Bifidobacterium / stomach C) Escherichia / intestinal tract D) Escherichia / stomach
A polysome is
a. one of the units of a ribosome. b. the nuclear organelle that synthesizes RNA. c. an organelle that functions similarly to a ribosome during meiosis. d. the two units of a ribosome considered together. e. an mRNA molecule with several ribosomes attached.
Serological testing relies upon
A. a very high viral or bacterial load in the patient. B. a patient who is not immunocompromised. C. the specificity of the Fc region of antibodies. D. the specificity of the variable regions of antibodies.
A fatty acid that contains only single bonds between the carbon atoms is considered
A. a cholestrol. B. unsaturated. C. trans unsaturated. D. saturated. E. a steroid.