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objective 9: Define, compare and contrast outgroup, ingroup, monophyletic, parap

ID: 52720 • Letter: O

Question

objective 9: Define, compare and contrast outgroup, ingroup, monophyletic, paraphyletic, and polyphyletic taxa and apply them to a gladogram (knowledge/comprehension/application) L Cladogram groupings A. In group B. Outgroup C. Monophyletic 1. Defined 2. Example D. Paraphyletic 1. Defined 2. Example E. Polyphyletic 1. Defined 2. Example objective 10: Compare and contrast the major approaches to constructing phylogenetic relationships, recognize different gladogram presentation formats and define parsimony (knowledge/comprehension) I. Two approaches to systematics A. Cladistics B. Phenetic. C. Evolutionary systematic approach II. Cladogram formats

Explanation / Answer

Ingroup is the species that we are studying about

Outgroup are species which are related to the Ingroup

Monophyletic taxon includes most common ancestor of a group of organisms that have all of the descendants

Example is Mammals that have common ancestor and all the descendants

Paraphyletic taxon includes most recent common ancestor but not all descendants

Example - Pisces and Reptilia

Polyphyletic taxon does not include common ancestor of all the members of the taxon.

Example - Hagfish and Jawless Lampreys

10.

Cladistics classify organisms based on evolutionary lineage

Phenetics classify organisms based on similarity in the morphology i.e structure

Evolutionary systematic approach classify organisms based on combination of shared descent and serial descent.