Which of the following are TRUE regarding phylogenetics?
A. Phylogenetic inference represent hypotheses about evolutionary relationship among organisms
B. Phylogenetics is the study of how organs evolved
C. Phylogenetics only works when we already know the true evolutionary relationships among organisms
D. Phylogenetics is the study of the functional relationships among different groups of organisms
Ans: A. Phylogenetic inference represent hypotheses about evolutionary relationship among organisms
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With __________, an animal learns to associate an involuntary response to one stimulus with another stimulus. Fill in the blank(s) with the appropriate word(s)
A true body cavity completely surrounded by __________ is called a coelom
a. ectoderm b. mesoderm c. endoderm d. exoderm e. mesoglea
Which of the following features is a shared derived trait of the animals?
A. Cells that contain chitin B. Vascular systems C. Similarities in their Hox genes D. Bilateral symmetry E. Spiral cleavage
Kin selection is defined as:
a. selection for a behavior that raises an individual's own chances of survival or reproduction, as well as those of a related individual. b. selection for a behavior that lowers an individual's own chances of survival or reproduction, but raises those of a relative. c. selection for a behavior that lowers an individual's own chances of survival or reproduction, but raises those of another individual who may be reciprocally altruistic. d. selection that operates not just on one individual, but on all of its relatives as well. e. None of the above is correct.