Answered: cladogram

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter29: Vertebrates

Section: Chapter Questions

Problem 6RQ: Hagfish. lam preys. sharks, and tuna are all chordates that can also be classified into which group?...

See similar textbooks

Related questions

Concept explainers

Topic Video

Question

A 2015 article in Nature has summarized the early history of jawed vertebrates using highlights from recent discoveries and how they have changed our understanding of vertebrate evolution.

https://www.sciencedaily.com/releases/2014/04/140416133336.htm

Question: Given these recent discoveries, how should the cladogram below change? Describe it. It will likely be helpful to reference a synapomorphy noted on the cladogram.

D
Amphibians
Primates
Sharks
Rodents & rabbits
Dinosaurs & birds
Hair
5
Two
post-orbital
fenestrae
Amniotic egg
6
3
Four limbs
2+Bony skeleton
1+ Vertebrae
Ray-finned fish
Crocodiles

Expert Solution

Step 1

A cladogram is a diagram used to represent a hypothetical relationship between groups of animals, called a phylogeny
cladograms reconstruct the evolutionary history. (phylogeny) of the taxa.
Synapomorphies are characters shared by a group of taxa due to inheritance from a common ancestor. Thus, their depiction on a cladogram may facilitate the understanding of evolutionary relationships.
The lines represent evolutionary time, or a series of organisms that lead to the population it connects to.
Nodes represent common ancestors between species . At some point in the past a population of common ancestor organisms was divided, giving rise to the different organisms being studied.

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.

Similar questions