Which of the following statements best describes the rationale for applying the principle of parsimony in constructing phylogenetic trees?
A) Parsimony allows the researcher to "root" the tree.
B) Similarity due to common ancestry should be more common than similarity due to convergent evolution.
C) The molecular clock validates the principle of parsimony.
D) The outgroup roots the tree, allowing the principle of parsimony to be applied.
B
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True or false: The benefit of asymmetric meiotic division during oogenesis is that it allows most of the cytoplasm to be retained in a single cell
A. true B. false
Which of the following groups are tetrapods?
a. cartilaginous fishes b. amphibians c. birds d. mammals e. amphibians, birds, and mammals
The following are steps used to construct a cladogram that best reflects the evolutionary relationships of a group of species. Which step involves deciding which tree is most likely to have occurred, based on the fewest character state changes?
A. Establish the character states. B. Select an outgroup. C. Polarize the characters. D. Gather data on characters to be used. E. Apply the principle of parsimony.
The fungal spores of Sporothrix schenckii from soil enter through a skin abrasion or cut and can cause a subcutaneous mycosis called
a. blastomycosis. b. chromoblastomycosis. c. paracoccidioidomycosis. d. sporotrichosis.