Analysis of which of the following would generally produce the most reliable phylogenetic tree?

a. The fossil record
b. DNA sequences
c. Homoplasies
d. Using all of the listed sources would produce the best-supported phylogeny.
e. DNA sequences and the fossil record


Answer: e. DNA sequences and the fossil record

Biology & Microbiology

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Osteogenesis imperfecta is a rare human condition caused by a mutation in a gene encoding Type I collagen. In some forms of the disease, the mutation leads to the production of procollagen that has a defective extension sequence; this defect interferes with the assembly of functional collagen fibers. Which of the following symptoms would you expect to see in individuals with osteogenesis

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