PDF_Phylogeny_notes - Tue Feb 5 Dr. Pepper Theory of common...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Principles of phylogeny Tue Feb 5 Dr. Pepper Quiz closes Tue Feb 12 Theory of common descent • Any two organisms can trace back to a common ancestor • We all belong to a big family tree, some more closely related than others • On the right is a history of individuals : can also draw up the history of species Theory of common descent •A n y tw o species can trace back to a common ancestor • We all belong to a big family tree, some more closely related than others • On the right is a history of species Darwin the creationist: The great CREATOR of all things has infinitely diversified the works of His hands, but has at the same time stamped certain similitude on the features of nature, that demonstrates to us, that the whole is one family of one parent. On this similitude is founded all rational analogy; which… leads us to many and important discoveries. ...” -Darw in±1796 ± (Not Charles, but his grandfather Erasmus) Many and important discoveries… • Where did humans come from, and when? •H ow c a n w e d
Background image of page 1

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

View Full DocumentRight Arrow Icon
2 Vibrio cholerae Mycoplasma pneumoniae Mycobacterium tuberculosis Vibrio cholerae Mycoplasma pneumoniae Mycobacterium tuberculosis These trees are the same These trees are the same These trees are the same time Which of these statements follows from the tree? a. Crocodiles are more closely related to lizards than to birds b. Crocodiles are more closely related to birds than to lizards c. Crocodiles are equally related to lizards and birds Focus on nodes = common ancestors Crocodile / Lizard Crocodile / Bird
Background image of page 2
3 Another method: redraw tree with focus on crocodile crocodile dinosaur bird lizard Which of these statements follows from the tree?
Background image of page 3

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

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 8

PDF_Phylogeny_notes - Tue Feb 5 Dr. Pepper Theory of common...

This preview shows document pages 1 - 4. Sign up to view the full document.

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