Limited time offer 20% OFF StudySoup Subscription details

USC - BIOL 102 - Class Notes - Week 5 Notes- Chapters 26 and 27

Created by: Kaeli Elite Notetaker

> > > > USC - BIOL 102 - Class Notes - Week 5 Notes- Chapters 26 and 27

USC - BIOL 102 - Class Notes - Week 5 Notes- Chapters 26 and 27

School: University of South Carolina
Department: Biology
Course: General Biology
Professor: Mihaly Czako
Term: Fall 2016
Tags: Bacteria, archea, Phylogeny, taxonomy, and Biology
Name: Week 5 Notes- Chapters 26 and 27
Description: Covers Bacteria and Archea as well as phylogeny and taxonomy. 9/13 and 9/15
Uploaded: 09/19/2016
This preview shows pages 1 - 2 of a 5 page document. to view the rest of the content
background image Chapter 26 Notes Phylogeny is not a form of classification o The evolutionary history of an organism o Shared ancestor indicates homology Genetic similarity  Phenotypic similarities o Need to differ between analogy and homology Analogy is from convergent evolution Structures called homoplaises if analogous Can be determined by computer analysis of DNA Shows same sequences When coincidental, they’re analogous o Groups Paraphyletic groups Clade and one from a close decent  Polyphyletic group Group plus one current species from a distant ancestor without the 
ancestor that connects them
Closer to convergent evolution Cladistics­ group by common decent  Clade­ group including a species and all of its decedents o Also called a monophyletic group  o Shared characters Shared ancestral­ originated from ancestor Shared derived­ clade specific trait o Tree terms Branch point­ where lineages diverge Smallest group to the far right of the tree is a taxon Polytomy­ More than two organisms with a common ancestor Sister taxa­ 2 organisms with a same common ancestor o Trees do not: Show phenotypic similarities  Show when a species evolved Show how much change occurred  o Trees do: Show genetic similarity o Why its important  Helps to understand biodiversity Genetic history & Change o Histroy DNA that codes for rRNA mutates slowly and helps to find branching 
points from long ago
background image mtDNA evolves rapidly and is used to explore recent evolutionary 
divergence
o Molecular clocks help make assumptions about molecular change Know that DNA replication misses 1 in a million pairs Use constant rates of evolution help estimate time of change Example: Used to find the origins of HIV in humans Taxonomy is the process of classifying  o Systematics classifies organisms based on evolutionary relationships o At first, everything was either plant or animal o Later was five: Monera, Protista, Plantae, Fungi, Animalia  Subgroups of Bacteria, Archaea, and Eukarya  o Suggests that Archaea and Eukarya are more closely related than to bacteria o Reproduction leads to horizontal gene transfer (if normal) o

This is the end of the preview. Please to view the rest of the content
Join more than 18,000+ college students at University of South Carolina who use StudySoup to get ahead
5 Pages 11 Views 8 Unlocks
  • Better Grades Guarantee
  • 24/7 Homework help
  • Notes, Study Guides, Flashcards + More!
Join more than 18,000+ college students at University of South Carolina who use StudySoup to get ahead
School: University of South Carolina
Department: Biology
Course: General Biology
Professor: Mihaly Czako
Term: Fall 2016
Tags: Bacteria, archea, Phylogeny, taxonomy, and Biology
Name: Week 5 Notes- Chapters 26 and 27
Description: Covers Bacteria and Archea as well as phylogeny and taxonomy. 9/13 and 9/15
Uploaded: 09/19/2016
5 Pages 11 Views 8 Unlocks
  • Better Grades Guarantee
  • 24/7 Homework help
  • Notes, Study Guides, Flashcards + More!
Join StudySoup for FREE
Get Full Access to USC - BIO 102 - Class Notes - Week 5
Join with Email
Already have an account? Login here
×
Log in to StudySoup
Get Full Access to USC - BIO 102 - Class Notes - Week 5

Forgot password? Reset password here

Reset your password

I don't want to reset my password

Need help? Contact support

Need an Account? Is not associated with an account
Sign up
We're here to help

Having trouble accessing your account? Let us help you, contact support at +1(510) 944-1054 or support@studysoup.com

Got it, thanks!
Password Reset Request Sent An email has been sent to the email address associated to your account. Follow the link in the email to reset your password. If you're having trouble finding our email please check your spam folder
Got it, thanks!
Already have an Account? Is already in use
Log in
Incorrect Password The password used to log in with this account is incorrect
Try Again

Forgot password? Reset it here