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

Bio Midterm Study Guide

by: Rachel Bell

Bio Midterm Study Guide Bio 124

Marketplace > University of Tampa > Biology > Bio 124 > Bio Midterm Study Guide
Rachel Bell

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

Introduction to Evolution
Biological Science - Lecture Only
Study Guide
Biology Concept and Controversy
50 ?




Popular in Biological Science - Lecture Only

Popular in Biology

This 4 page Study Guide was uploaded by Rachel Bell on Friday July 29, 2016. The Study Guide belongs to Bio 124 at University of Tampa taught by Dr.Marrero in Summer 2016. Since its upload, it has received 8 views. For similar materials see Biological Science - Lecture Only in Biology at University of Tampa.


Reviews for Bio Midterm Study Guide


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: 07/29/16
Lecture 15: Introduction to Evolution What is natural selection? Organisms best suited to the environment have the most resources for survival  and reproduction and pass the beneficial traits to offspring. What is ‘descent modification’? Modifications accumulated from generation to generation that can ultimately  result in new species. Based on the short film: Got Lactase? The co­evolution of genes and culture: What is lactase persistence? Adults whose ability to produce the enzyme that breaks down lactose persists  past childhood and for the rest of their lives. Why drinking milk could have provided strong favorable selection for lactase  persistence? 1. Milk is simply a great and nutritious food (a superfood), high in fat and  protein. 2. Milk is safer to drink than water reduces exposure to pathogens. 3.Milk may have been the only food available during times of famine.  Lecture 16: Darwinian Revolution How new traits emerge in a population? Natural Selection How natural selection changes the frequency of a trait in a population? Over time, favorable traits become more common in a population. Which two observations led Darwin to construct a logical argument for evolution by  natural selection? 1. Individuals in a species vary to some degree in traits. 2. A species produces more offspring than actually survives to mature and  reproduce.  Based on the short film Making of the Fittest: Natural Section in Humans What is sickle cell disease?  A genetic disease in which red blood cells are mis­shapen, crescents instead of  discs, and prevents oxygen from being delivered to all parts of the body.    What causes malaria disease? A mosquito that carries the malaria parasite.  Why sickle cell disease became so prevalent in certain East African populations? People who carried one sickle cell gene had an innate resistance to malaria.  Protection from malaria comes at the cost of more sickle cell disease in a  population. Sickle cell mutation. Lecture 17: Forces that Drive Evolution What is gene flow? The transfer of alleles between populations as a result of migration.  What is genetic drift? There are many situations in which the frequency of alleles in a population can change although the population is not adapting to the environment. Genetic drift refers to fluctuations in allele frequencies in a population because of random events. Why gene flow and genetic drift are not selective forces for evolution? They are not selective forces for evolution because they are random events that change genetic diversity of a population. Based on the short film: The Making of the Fittest: Natural Selection and Adaptation How natural selection favored dark­colored mice? Evidence that natural selection is not random is the fact that when different  genetic mutations produce the same phenotypic results in different areas, these  similar adaptations are favored under similar conditions. An example provided in  the film is the different populations of rock pocket mice with mutations that result in dark fur color. Dr. Sean Carroll summed it up in the statement: “Evolution  repeats itself.” This is evidence that natural selection is not random.  Why dark­colored mice were more fit than light­colored mice? Dark colored mice were more fit than light-colored mice because they can protect themselves from predators by blending into the rocks. Lecture 18: Ecology What are abiotic and biotic environmental factors? Abiotic factors are the basic, nonliving components that affect ecosystems (sunlight, wind, rain, water, soil). Biotic factors are the living things in the environment (algae, fish, etc.). Describe each type of relationship: Competition, Predation, Symbiosis, Mutualism,  Commensalism, and Parasitism.  Competition: when two or more organisms rely on the same environmental resource. Predation: behavior of one animal feeding on another. Symbiosis: the close relationship of two dissimilar organisms. Mutualism: a symbiotic relationship where both organisms benefit. Commensalism: a symbiotic relationship where one organism benefits and the other one does not benefit but it is unharmed. Parasitism: a symbiotic relationship where one organisms benefits and one is harmed. (all green is different types of symbiotic relationships) Lecture 19: Climate Change Describe each cause for change: Solar Output, Volcanic Eruptions, Milankovitch  Cycles, El Niño, and Greenhouse Gases. Solar Output: Fluctuations from the sun. Volcanic Eruptions: Releases ashes, cloud= makes Earth warmer. Milankovitch Cycles: Patterns by which Earth's eccentricity, tilt, and precession change over hundreds of thousands of years. Slight changes in eccentricity, tilt, or precession each can cause major climatic changes because they influence the amount of solar radiation that reaches Earth's surface. El Niño: Is a natural event occurring every 3 to 7 years that contributes to a warming in the Central Pacific Ocean. This warming alters the interactions among wind, ocean current, and rain patterns, producing major changes to weather conditions. During an El Niño event, the trade winds decrease, shifting the warming of the sea surface and the rainfall patterns that go with it to the east. This leads to heavy rainfall on the east side of the Pacific and drought conditions to the west. Greenhouse Gases: Greenhouse gases are compounds in the atmosphere that trap heat that radiates from Earth's surface.   What are the consequences of climate change? • Global warming • Ice melting • Rising sea levels • Extreme weather


Buy Material

Are you sure you want to buy this material for

50 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!"

Kyle Maynard Purdue

"When you're taking detailed notes and trying to help everyone else out in the class, it really helps you learn and understand the I made $280 on 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."

Parker Thompson 500 Startups

"It's a great way for students to improve their educational experience and it seemed like a product that everybody wants, so all the people participating are winning."

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.