In the unweighted pair group method (UPGMA) of determining evolutionary relationships,
A) each set of taxa is connected by the shortest genetic distance.
B) a constant rate of evolution across all lineages is assumed.
C) a distance matrix is first constructed.
D) A and B only
E) A, B, and C
E
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Many archaeal genomes include chromosomes and plasmids.
Answer the following statement true (T) or false (F)
Some members of the Archaea domain are often referred to as extremophiles because many live in conditions of extreme
A. temperature. B. salinity. C. heat. D. acidity. E. All of the answer choices are correct.
Respiration is a physiological process by which O2 enters the internal environment and CO2 leaves by
diffusing across a __________. Fill in the blank(s) with the appropriate word(s).
Koch's Postulates for identifying a pathogen require all of the following EXCEPT
A) re-inoculation and production of disease. B) sequencing the DNA of the suspect organism. C) isolating an organism from a diseased host. D) culturing an organism in pure form.