New User Special Price Expires in

Let's log you in.

Sign in with Facebook


Don't have a StudySoup account? Create one here!


Create a StudySoup account

Be part of our community, it's free to join!

Sign up with Facebook


Create your account
By creating an account you agree to StudySoup's terms and conditions and privacy policy

Already have a StudySoup account? Login here


by: Alysha Quigley


Alysha Quigley
Virginia Commonwealth University
GPA 3.87

Adam Chupp

Almost Ready


These notes were just uploaded, and will be ready to view shortly.

Purchase these notes here, or revisit this page.

Either way, we'll remind you when they're ready :)

Preview These Notes for FREE

Get a free preview of these Notes, just enter your email below.

Unlock Preview
Unlock Preview

Preview these materials now for free

Why put in your email? Get access to more of this material and other relevant free materials for your school

View Preview

About this Document

Adam Chupp
Class Notes
25 ?




Popular in Course

Popular in Biology

This 5 page Class Notes was uploaded by Alysha Quigley on Wednesday October 28, 2015. The Class Notes belongs to BIOL 101 at Virginia Commonwealth University taught by Adam Chupp in Fall. Since its upload, it has received 14 views. For similar materials see /class/230647/biol-101-virginia-commonwealth-university in Biology at Virginia Commonwealth University.

Similar to BIOL 101 at Virginia Commonwealth University




Report this Material


What is Karma?


Karma is the currency of StudySoup.

You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!

Date Created: 10/28/15
Evolution 1192009 30600 PM Alfred Wallace o Developed and communicated ideas from thousands of miles away o Darwin and Wallace were both naturalists Observing the morphological dietary reproductive and social characteristics of organisms o A generation younger than Darwin Nichewhat you do on a daily basis your habits Voyages c From 18311836 Darwin served as naturalist aboard the HMS Beagle o Wallace voyaged through Malaysia and Indonesia from 1854 to 1862 Influences o Darwin and Wallace were both influenced by Thomas Malthus 1798 Essay on the principles of Population Observations o Island Biogeaography 0 Observed patterns in species characteristics and distribution 0 Island species are more similar in composition to the nearest mainland than they are to distant islands 0 Island populations were founded by small numbers of mainland species which then evolved into distinct species in distinctly different habitats Sumatran Tiger 0 Adaptive Radiation the evolution of species into a diversity of previously unoccupied habitats or niches 0 Species from distinct geographic area are similar because they share a recent common ancestor but differ according to local environmental conditions Species characteristics depend upon ancestry and the environment Conclusion o Preservation of favorable variations is called natural selection 0 Darwin previously believed that all things had existed in perpetuity in accordance with the common romanticized Victorian thought On the Origin of Species challenged the concept of humanity and religious authority The theory of evolution by natural selection was accepted by the scientific community after a century of cross examination o Evidence for Evolution 0 Biogeographical evidence 0 Fossil Evidence Radioisotope dating 0 Anatomical evidence 0 Molecular evidence o Fossil Record 0 Mineralized bones that provide an incomplete record of past fauna Changes in phenotype are documented 0 Transitional species demonstrate common ancestry Radioisotopic decay facilitates accurate dating o Anatomical Record 0 Homologous structures 9 divergent evolution 0 Analogous structures 9 convergent evolution 0 Vestigial structures express ancestral traits o Molecular evidence 0 Amino acid substitutions in a given protein reflect the distance of time since divergence Change through Natural Selection o Genertic variation among individuals o Life is a struggle limiting resources etc o Some phenotypes are favored o Successful phenotypes reproduce o Populations exhibit the successful traits Evolution o Descent with modification 0 Lamarck inheritance of acquired traits individual level Evolving Populations o Variation is introduced by 0 Mutation 0 Gene Flow immigration amp emigration O O O O 0 Genetic Drift due to chance Lose Traits Rare traits might become common a Bottleneck Effect n Founder Effect Non Random Mating Inbreeding Sexual selection HardyWeinberg Equilibrium Selection for Traits Forms of Selection n Directional o Extreme phenotype favored o Prickly pear cactus are preyed upon by Peccaries o Cacti with fewer spines are eaten more frequently 0 Cacti with more spines prosper n Stabilizing o An intermediate phenotype is selected 0 Prickly pear cacti are preyed upon by Peccary Cacti with more spines survive o Wasp deposits larvae at the base of cactus spines Cacti with fewer spines survive 0 Neither extreme is favored in the middle n Disruptive o Extreme phenotypes are selected 0 Extreme phenotypes are better adapted 0 Selection removes intermediate phenotype o Extremes begin to diverge 0 Intermediate phenotype is dissolved o Create a speciation event o Macroevolutionary change Speciation Results from n Reproductive isolation o Prezygotic o Temporalreproductive timing 0 Behavioral courtship patterns 0 Mechanical gamete compatibility o Postzygotic o Zygote mortalitymitosis fails 0 Hybrid sterilityinfertile offspring 0 F2 fitnesshybrids produce infertile offspring Species capable of producing viable offspring Sympatric Speciation n Within the same habitat a Gene flow disrupted because of niche specialization o Disruptive selection Allopatric speciation n Geographic isolation a Local adaptation n Reproductive isolation 1192009 30600 PM


Buy Material

Are you sure you want to buy this material for

25 Karma

Buy Material

BOOM! Enjoy Your Free Notes!

We've added these Notes to your profile, click here to view them now.


You're already Subscribed!

Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'

Why people love StudySoup

Bentley McCaw University of Florida

"I was shooting for a perfect 4.0 GPA this semester. Having StudySoup as a study aid was critical to helping me achieve my goal...and I nailed it!"

Amaris Trozzo George Washington University

"I made $350 in just two days after posting my first study guide."

Jim McGreen Ohio University

"Knowing I can count on the Elite Notetaker in my class allows me to focus on what the professor is saying instead of just scribbling notes the whole time and falling behind."


"Their 'Elite Notetakers' are making over $1,200/month in sales by creating high quality content that helps their classmates in a time of need."

Become an Elite Notetaker and start selling your notes online!

Refund Policy


All subscriptions to StudySoup are paid in full at the time of subscribing. To change your credit card information or to cancel your subscription, go to "Edit Settings". All credit card information will be available there. If you should decide to cancel your subscription, it will continue to be valid until the next payment period, as all payments for the current period were made in advance. For special circumstances, please email


StudySoup has more than 1 million course-specific study resources to help students study smarter. If you’re having trouble finding what you’re looking for, our customer support team can help you find what you need! Feel free to contact them here:

Recurring Subscriptions: If you have canceled your recurring subscription on the day of renewal and have not downloaded any documents, you may request a refund by submitting an email to

Satisfaction Guarantee: If you’re not satisfied with your subscription, you can contact us for further help. Contact must be made within 3 business days of your subscription purchase and your refund request will be subject for review.

Please Note: Refunds can never be provided more than 30 days after the initial purchase date regardless of your activity on the site.