30 Introduction to Phylogenies and the History of Life

Photo shows a bee collecting nectar from a flower.
Figure 1: A bee’s life is very different from a flower’s, but the two organisms are related. Both are members of the domain Eukarya and have cells containing many similar organelles, genes, and proteins. (credit: modification of work by John Beetham)

This bee and Echinacea flower (Figure 1) could not look more different, yet they are related, as are all living organisms on Earth. By following pathways of similarities and changes—both visible and genetic—scientists seek to map the evolutionary past of how life developed from single-celled organisms to the tremendous collection of creatures that have germinated, crawled, floated, swum, flown, and walked on this planet.


Access for free at https://openstax.org/books/biology-2e/pages/1-introduction

License

Icon for the Creative Commons Attribution 4.0 International License

Introductory Biology: Evolutionary and Ecological Perspectives by Various Authors - See Each Chapter Attribution is licensed under a Creative Commons Attribution 4.0 International License, except where otherwise noted.

Share This Book