Question

Outgroup analysis looks for features that are shared derived characters in a give n group of organısms. a. True b. False A paraphyletic group consists of several evolutionary lines that do not share a common ancestor. a. True b. False Systematists use phylogenetic trees to graphically represent hypothesized evolutionary relationships among ganisms. a. True b. False A characteristic that is independently acquired by reversal or convergent evolution exhibits homology. a. True b. False Mammalia is a class the contains many phyla. a. True b. False Two organisms with similar features should always be grouped together. Why or why not. How do cladists classify a new species, and how does it differ from a classification based on phonetics?

Answer 1

Outgroup analysis looks for features that are shared derived characteristics in a given group of organisms. This statement is true.

Reason: The term out group in biology is related to the distantly related group of organisms which will generally serve as a reference group to determine the evolutionary relationship within the group.

A paraphyletic group consists of several evolutionary lines that do not share a common ancestor. The statement is true.

Reason: A paraphyletic group is a group of organisms that will include an ancestor but not all its descendents.

Systematists use the phylogenic tree to graphycally represent the hypothesized evolutionary relationships among the organisms. The above statement is true.

Reason: The phylogenic tree is also called as the evoutionary tree.