chapter 9

Chapter 9 - see similar structures(origins c Comparative DNA compare nucleotide sequences to look for similar sequences Human& Chimp DNA are 99

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 9 Evolution 1) Evidence a) Comparative anatomy: similarities/ differences in physical features i) Homologous structures: similar in internal structure (bones in same relative positions) and have similar origin ii) Vestigial structures: greatly reduces in size, no longer function (similar embryonic origin); Ex.: human tailbone, appendix, wisdom teeth, etc. iii) Analogous structures: alike externally (similar function); not alike internally (different skeletal features) b) Comparative Embryology: compare developmental stages between various embryos to
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: see similar structures (origins) c) Comparative DNA: compare nucleotide sequences to look for similar sequences; Human & Chimp DNA are 99% similar d) Biogeography: looking for relationships between the locations (on Earth) where the organisms and their ancestors live/ lived; Ex.: marsupials mostly in Australia e) Fossils i) Scarce ii) Fossil record is incomplete iii) Relative date (radioactive dating)...
View Full Document

This note was uploaded on 07/07/2008 for the course BIOL 115 taught by Professor Behrens during the Spring '07 term at Towson.

Ask a homework question - tutors are online