cladisitcs_info

cladisitcs_info - Great egret Great blue heron Least...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
Cladistics A phylogeny is an evolutionary history of a group of taxa described as an evolutionary tree (cladogram) with a common ancestor at the base and descendent taxa as branch tips common ancestor descendent taxa taxa can be populations, subspecies, species, genera, etc.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
A B C A B C can be slanted or bracket style Cladograms: Snowy egret Little blue heron Least bittern Glossy ibis Boat-billed heron Great egret Great blue heron Snowy egret Little blue heron Least bittern Glossy ibis Boat-billed heron Great egret Great blue heron can be oriented in different ways , but the relationships remain the same
Background image of page 2
Taxa can rotate around interior nodes without changing the relationships Cladograms Snowy egret Little blue heron Least bittern Glossy ibis Boat-billed heron Great egret Great blue heron Least bittern Glossy ibis Boat-billed heron Great egret Great blue heron Little blue heron Snowy egret
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Snowy egret Little blue heron Least bittern Glossy ibis Boat-billed heron
Background image of page 4
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 6
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Great egret Great blue heron Least bittern Glossy ibis Boat-billed heron G r e a t b l u h o n g Little blue heron Snowy egret Taxa can rotate around interior nodes without changing the relationships Cladograms Snowy egret Little blue heron Least bittern Glossy ibis Boat-billed heron Great egret Great blue heron Least bittern Glossy ibis Boat-billed heron Great egret Great blue heron Little blue heron Snowy egret Taxa can rotate around interior nodes without changing the relationships The order of branching is what is important! Cladograms Evolutionarily Advanced? Differences in complexity or level of organization may exist More complex Better Adapted Evolution is not goal oriented Ex. Evolution on the fish branch is not working towards mammals Fis h Amphibian s Reptiles Birds Mammals...
View Full Document

This note was uploaded on 01/18/2012 for the course BIOL L111 taught by Professor Dr.susanhengeveld during the Fall '11 term at Indiana.

Page1 / 6

cladisitcs_info - Great egret Great blue heron Least...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online