Hypothesis 1: Porifera is a monophyletic group Porifera is the sister-group to Eumetazoa Hexactinellida is more closely related to Calcarea Demospongea is equally closely related to both Hexactinellida and Calcarea. Hypothesis 2: Porifera is a paraphyletic group Calcarea is more closely related to Eumetazoa than Demospongea or Hexactinellida Hexactinellida is sister-group to the clade formed by Calcarea and Eumetazoa Hexactinellida is more closely related to Calcarea and Eumetazoa than to Demospongea
Hypothesis 1: Porifera is a monophyletic group Porifera is the sister-group to Eumetazoa Hexactinellida is more closely related to Calcarea Demospongea is equally closely related to both Hexactinellida and Calcarea. Hypothesis 2: Porifera is a paraphyletic group Calcarea is more closely related to Eumetazoa than Demospongea or Hexactinellida Hexactinellida is sister-group to the clade formed by Calcarea and Eumetazoa Hexactinellida is more closely related to Calcarea and Eumetazoa than to Demospongea
Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Chapter27: Protists
Section: Chapter Questions
Problem 7TYK
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There are currently two phylogenetic hypotheses about the phylogeny of Porifera: one in which Porifera is a monophyletic group (clade) and one in which it is a paraphyletic group. Draw both of these hypotheses below based on the following description.
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