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

EVOLUTION week 1(02/09-02/12)

by: Anita Rao

EVOLUTION week 1(02/09-02/12) BISC208012

Marketplace > University of Delaware > Biological Sciences > BISC208012 > EVOLUTION week 1 02 09 02 12
Anita Rao
View Full Document for 0 Karma

View Full Document


Unlock These Notes for FREE

Enter your email below and we will instantly email you these Notes for Introductory Biology II

(Limited time offer)

Unlock Notes

Already have a StudySoup account? Login here

Unlock FREE Class Notes

Enter your email below to receive Introductory Biology II notes

Everyone needs better class notes. Enter your email and we will send you notes for this class for free.

Unlock FREE notes

About this Document

Covers all topics in the first week of class. Topic covered was evolution
Introductory Biology II
Oyenike Olabisi PhD
Class Notes
evolution biology bisc




Popular in Introductory Biology II

Popular in Biological Sciences

This 2 page Class Notes was uploaded by Anita Rao on Friday February 12, 2016. The Class Notes belongs to BISC208012 at University of Delaware taught by Oyenike Olabisi PhD in Spring 2016. Since its upload, it has received 6 views. For similar materials see Introductory Biology II in Biological Sciences at University of Delaware.

Similar to BISC208012 at UD

Popular in Biological Sciences


Reviews for EVOLUTION week 1(02/09-02/12)


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: 02/12/16
EVOLUTION 2/9/16 Evolution is a genetic change over time! Must involve descent through genetic inheritance to be considered evolution. It cannot be an individual it must be a generational (species) change. Biological evolution  Biological evolution has the added dimension of heritability!  Individual organisms are not capable of biological evolution  A population evolves over time by genetic changes THE THEORY OF EVOLUTION  The theory of evolution is the cornerstone of modern scientific understanding of life.  Explains both the unity and diversity of life! o DNA is shared by all organisms o Biological evolution refers to changes in DNA sequences over time.  It can be used to find a common ancestry among species. Genetic Variation  Evolution is responsible for both the remarkable similarities we see across all life and the amazing diversity of that life  Fundamental to the process is genetic variation  Genetic variation: genetic differences that exist among individuals in a population at a particular point in time  There are many types of DNA and chromosomal variations in populations today.  Advances sequencing techniques allows genetic variation to be studied directly in DNA molecules  Difference consequences for the organism. What are the key sources of genetic variation?  Crossing over  Reassortment of homologues  Alleles come from two parents Genetic Shuffling  Sexual reproduction can introduce new gene combinations into a population.  This genetic shuffling is another importance source of genetic variation. Natural Selection occurs when the likelihood of individuals with certain traits surviving and reproducing is higher that those with other traits and the genes for the good traits are passed from parent to offspring. Biological evolution  Descent with modification  Can be o Micro-evolution  Small-scale evolution (changes in gene frequency in a population from one generation to the next)  Within a single population o Macro- evolution  Large-scale evolution (the descent of different species from one generation to the next) Homologies - shared similarities between species inherited from a common ancestor. Evolutionary theory predicts that related organisms will share similarities that are derived from common ancestors. Similar characteristics due to relatedness.  Anatomical homologies o Human arm and bat wing o Doesn't have to be same functions just same structure.  Molecular homologies  Fossil record o Fossil record provides snapshots of the past o Consists of all the fossils scientists have discovered and preserved o Parts of organisms preserved in sedimentary rocks. o When assembled, illustrate a panorama of evolutionary


Buy Material

Are you sure you want to buy this material for

0 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

Steve Martinelli UC Los Angeles

"There's no way I would have passed my Organic Chemistry class this semester without the notes and study guides I got from StudySoup."

Allison Fischer University of Alabama

"I signed up to be an Elite Notetaker with 2 of my sorority sisters this semester. We just posted our notes weekly and were each making over $600 per month. I 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!"


"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.