Study Guides (258,816)
CA (125,011)
UTSG (8,541)
ANT (265)
ANT100Y1 (103)

ch 3_

1 Page
118 Views

Department
Anthropology
Course Code
ANT100Y1
Professor
Christopher Watts

This preview shows half of the first page. Sign up to view the full page of the document.
Macroevolution and Evolutionar y Anthro 21:06
Macroevolution refers to large-scale changes at or above the species level, extending
over a geological era, and resulting in the formation of new taxonomic groups.
Whats a Species?
- a single, distinct class of living creature with features that distinguish it from
other species.
Biological Species Concept (BSC)
a species represents a population of individuals that varies from other species in a
variety of ways and that individuals in a population exchange genes by
interbreeding.
biological features prevent one species from breeding with another species
Phylogenetic Species Concept (PSC)
a species is the smallest aggregation of (sexual) populations diagnosable by unique
combination of character states.
it requires a researcher to measure and analyze character states of a sample of
individuals in and between populations.
Whats Speciation?
- Allopatric speciation: some form of physical barrier causes geographic isolation
and reduces gene flow between populations. The barrier only has to limit gene flow;
complete isolation is not necessary. Thus, a barrier can operate in very small
geographic scales for some organisms.
- Two major models of allopatric speciation:
vicariant speciation: occurs when a physical barrier creates large, geographically
separated populations, which then diverge from each other and can no longer
interbreed.
Peripatric spetiation: occurs when a small, peripherally isolated colony of the main
population diverges to become a new species.
Intro to Cladistics
- the study of evolutionary relationships within and between organisms on our
planet.
- a cladogram, also known as a phylogeny or evolutionary tree, is a graph used to
visualize hypothesized evolutionary relationships.
- thus, a cladogram is a graphical representation of the evolutionary relationships
among organisms, whether extinct or extant.
www.notesolution.com

Loved by over 2.2 million students

Over 90% improved by at least one letter grade.

Leah — University of Toronto

OneClass has been such a huge help in my studies at UofT especially since I am a transfer student. OneClass is the study buddy I never had before and definitely gives me the extra push to get from a B to an A!

Leah — University of Toronto
Saarim — University of Michigan

Balancing social life With academics can be difficult, that is why I'm so glad that OneClass is out there where I can find the top notes for all of my classes. Now I can be the all-star student I want to be.

Saarim — University of Michigan
Jenna — University of Wisconsin

As a college student living on a college budget, I love how easy it is to earn gift cards just by submitting my notes.

Jenna — University of Wisconsin
Anne — University of California

OneClass has allowed me to catch up with my most difficult course! #lifesaver

Anne — University of California
Description
Macroevolution and Evolutionary Anthro 21:06 Macroevolution refers to large-scale changes at or above the species level, extending over a geological era, and resulting in the formation of new taxonomic groups. Whats a Species? - a single, distinct class of living creature with features that distinguish it from other species. Biological Species Concept (BSC) a species represents a population of individuals that varies from other species in a variety of ways and that individuals in a population exchange genes by interbreeding. biological features prevent one species from breeding with another species Phylogenetic Species Concept (PSC) a species is the smallest aggregation of (sexual) populations diagnosable by unique combination of character states. it requires a researcher to measure and analyze character states of a sample of individuals in and between populations. Whats Speciation? - Allopatric speciation: some form of physical barrier c
More Less
Unlock Document


Only half of the first page are available for preview. Some parts have been intentionally blurred.

Unlock Document
You're Reading a Preview

Unlock to view full version

Unlock Document

Log In


OR

Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit