most recent common ancestor of asteroids and holothuroids (sea cucumbers). Label it “A”. The sister group is the clade that shares a node with the clade of interest. Circle the sister group to Eleutherozoa. Label it “B”.
most recent common ancestor of asteroids and holothuroids (sea cucumbers). Label it “A”. The sister group is the clade that shares a node with the clade of interest. Circle the sister group to Eleutherozoa. Label it “B”.
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
Related questions
Question
In the echinoderm phylogeny below, circle the node that represents the most recent common ancestor of asteroids and holothuroids (sea cucumbers). Label it “A”.
The sister group is the clade that shares a node with the clade of interest. Circle the sister group to Eleutherozoa. Label it “B”.
Transcribed Image Text:Eleutherozoa
Mobile echinoderms
Pelmatozoa
Stalked echinoderms
[
Crinoidea (sea lilies)
Blastoideat
Ophiuroidea (brittle stars)
Asteroidea (sea stars)
Echinoidea (sea urchins)
Holothuroidea (sea cucumbers)
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