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  • Reproduction
Allopatric Speciation
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These images from the Smithsonian Institution depict Nancy Knowlton's work with snapping shrimp in Panama. Knowlton found that the closing of the isthmus -- dividing the Pacific Ocean from the Caribbean -- resulted in new species of shrimp.

Subject:
Life Science
Material Type:
Diagram/Illustration
Reading
Provider:
PBS LearningMedia
Provider Set:
PBS Learning Media: Multimedia Resources for the Classroom and Professional Development
Teachers' Domain
Author:
National Science Foundation
WGBH Educational Foundation
Date Added:
09/26/2003
American Chestnut Tree
Conditions of Use:
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Rating

This annotated slideshow adapted from KET's Electronic Field Trip to the Forest illustrates how blight decimated the American chestnut tree and the methods scientists use to identify and pollinate the remaining trees to create blight-resistant trees.

Subject:
Life Science
Ecology
Forestry and Agriculture
Genetics
Material Type:
Interactive
Reading
Provider:
Kentucky Educational Television
PBS LearningMedia
Provider Set:
Teachers' Domain
Author:
KET
The William and Flora Hewlett Foundation
Date Added:
08/25/2008
Animal Cell Meiosis Animation
Conditions of Use:
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Rating

Meiosis is important in assuring genetic diversity in sexual reproduction. Use this interactive animation to follow Meiosis I (reduction division) and Meiosis II in a continuous sequence or stop at any stage and review critical events.

Subject:
Education
Life Science
Material Type:
Interactive
Lesson Plan
Provider:
SMARTR
Provider Set:
SMARTR: Virtual Learning Experiences for Youth
Date Added:
11/06/2010
Animal Cell Mitosis Animation
Conditions of Use:
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Rating

This animation demonstrates the stages of mitosis in an animal cell. Use the control buttons in the upper left to run the complete animation. Click on any intermediate stage (for example, Anaphase), and see a representative still frame.

Subject:
Education
Life Science
Material Type:
Interactive
Provider:
SMARTR
Provider Set:
SMARTR: Virtual Learning Experiences for Youth
Date Added:
11/06/2010
Asexual Reproducers
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Rating

This video segment explores the benefits and pitfalls of cloning as a means of reproduction. From Evolution: "Why Sex?"

Subject:
Life Science
Material Type:
Activity/Lab
Provider:
PBS LearningMedia
Provider Set:
PBS Learning Media: Multimedia Resources for the Classroom and Professional Development
Teachers' Domain
Author:
Clear Blue Sky Productions
National Science Foundation
WGBH Educational Foundation
Date Added:
09/26/2003
Biology
Conditions of Use:
No Strings Attached
Rating

Biology is designed for multi-semester biology courses for science majors. It is grounded on an evolutionary basis and includes exciting features that highlight careers in the biological sciences and everyday applications of the concepts at hand. To meet the needs of today’s instructors and students, some content has been strategically condensed while maintaining the overall scope and coverage of traditional texts for this course. Instructors can customize the book, adapting it to the approach that works best in their classroom. Biology also includes an innovative art program that incorporates critical thinking and clicker questions to help students understand—and apply—key concepts.

Subject:
Life Science
Biology
Material Type:
Full Course
Provider:
Rice University
Provider Set:
OpenStax College
Date Added:
08/22/2012
Biology, Animal Structure and Function, Animal Reproduction and Development, Reproduction Methods
Conditions of Use:
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Rating

By the end of this section, you will be able to:Describe advantages and disadvantages of asexual and sexual reproductionDiscuss asexual reproduction methodsDiscuss sexual reproduction methods

Subject:
Applied Science
Life Science
Biology
Material Type:
Module
Provider:
Rice University
Provider Set:
OpenStax College
Date Added:
07/10/2017
Biology, Evolutionary Processes, Evolution and the Origin of Species, Formation of New Species
Conditions of Use:
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Rating

By the end of this section, you will be able to:Define species and describe how species are identified as differentDescribe genetic variables that lead to speciationIdentify prezygotic and postzygotic reproductive barriersExplain allopatric and sympatric speciationDescribe adaptive radiation

Subject:
Applied Science
Life Science
Biology
Material Type:
Module
Provider:
Rice University
Provider Set:
OpenStax College
Date Added:
07/10/2017
The Cell Cycle Animation
Conditions of Use:
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Rating

During development from stem to fully differentiated, cells in the body alternately divide (mitosis) and "appear" to be resting (interphase). This sequence of activities exhibited by cells is called the cell cycle. Watch this animation to learn more about each of the stages in the cell cycle: interphase, gap 0, gap 1, S Phase, gap 2, and M phase.

Subject:
Education
Life Science
Material Type:
Diagram/Illustration
Interactive
Lesson Plan
Provider:
SMARTR
Provider Set:
SMARTR: Virtual Learning Experiences for Youth
Date Added:
11/06/2010
CreatureCast – Doliolids
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Rating

Robert Sandler tells the story of doliolid reproduction. The video was made with paper puppets and hand-drawn animations. Robert made this episode with support from the Society of Royce Fellows.

Subject:
Biology
Zoology
Material Type:
Lecture
Provider:
Dunn Lab at Brown University
Provider Set:
CreatureCast
Author:
Robert Sandler
Date Added:
09/08/2012
Dance of Development
Conditions of Use:
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Rating

Watch the dance of development as a zebrafish egg divides and differentiates on its way to becoming an embryo in this interactive activity adapted from the Exploratorium.

Subject:
Life Science
Functions
Material Type:
Activity/Lab
Interactive
Provider:
PBS LearningMedia
Provider Set:
PBS Learning Media: Multimedia Resources for the Classroom and Professional Development
Teachers' Domain
Author:
National Science Foundation
WGBH Educational Foundation
Date Added:
08/09/2007
Dolphin Reproductive Behavior
Conditions of Use:
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Rating

This video segment from the Science and Technology Chat series focuses on dolphin pregnancy, birth, and care of the young, and features Atlantic bottlenose dolphins living in captivity at the Mirage Resort Dolphin Habitat.

Subject:
Life Science
Ecology
Forestry and Agriculture
Material Type:
Lecture
Provider:
PBS LearningMedia
Vegas PBS
Provider Set:
Teachers' Domain
Author:
The William and Flora Hewlett Foundation
VegasPBS
Date Added:
09/09/2008
Endocrine Disruptor Hypothesis
Conditions of Use:
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Rating

Scientists discuss whether or not endocrine disrupting chemicals, which may cause birth defects and other health concerns, should be controlled in the absence of conclusive proof, in this video segment adapted from FRONTLINE: Fooling with Nature.

Subject:
Life Science
Ecology
Forestry and Agriculture
Material Type:
Lesson
Provider:
PBS LearningMedia
Provider Set:
PBS Learning Media Common Core Collection
Author:
NIEHS
WGBH Educational Foundation
Date Added:
03/02/2011
Fruit Wrappers
Conditions of Use:
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Rating

In this video from Curious George, join students as they investigate banana peels and fruit seeds to discover their different functions.

Subject:
Life Science
Material Type:
Lecture
Provider:
PBS LearningMedia
Provider Set:
PBS Learning Media: Multimedia Resources for the Classroom and Professional Development
Teachers' Domain
Author:
National Science Foundation
WGBH Educational Foundation
Date Added:
08/09/2007
General Biology with Lab (BIOL 160)
Conditions of Use:
No Strings Attached
Rating

General Biology is intended to leave the student with an integrated view of the living world including the nature of sciences, evolution of biological organization, composition and organization of living substances, metabolism, control, reproduction, heredity and ecological relationships. This class meets the A.A. degree lab science requirement in the State of Washington.Login: guest_oclPassword: ocl

Subject:
Biology
Material Type:
Activity/Lab
Full Course
Homework/Assignment
Lecture Notes
Lesson Plan
Reading
Syllabus
Provider:
Washington State Board for Community & Technical Colleges
Provider Set:
Open Course Library
Date Added:
10/31/2011
The Geniverse Lab Demo
Conditions of Use:
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Rating

The Geniverse software is being developed as part of a five-year research project funded by the National Science Foundation. Still in its early stages, a Beta version of the software is currently being piloted in six schools throughout New England. We invite you to try the current Beta version, keeping in mind that you may encounter errors or pages that are not fully functional. If you encounter any problem, it may help to refresh or reload the web page.

Subject:
Life Science
Genetics
Material Type:
Activity/Lab
Data Set
Game
Interactive
Student Guide
Provider:
Concord Consortium
Provider Set:
Concord Consortium Collection
Author:
The Concord Consortium
Date Added:
12/11/2011
Global Problems of Population Growth
Conditions of Use:
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Rating

This survey course introduces students to the important and basic material on human fertility, population growth, the demographic transition and population policy. Topics include: the human and environmental dimensions of population pressure, demographic history, economic and cultural causes of demographic change, environmental carrying capacity and sustainability. Political, religious and ethical issues surrounding fertility are also addressed. The lectures and readings attempt to balance theoretical and demographic scale analyzes with studies of individual humans and communities. The perspective is global with both developed and developing countries included.

Subject:
Arts and Humanities
Biology
Material Type:
Full Course
Lecture
Reading
Syllabus
Provider:
Yale University
Provider Set:
Open Yale Courses
Author:
Robert Wyman
Date Added:
02/16/2011
How Do Beetles Reproduce?
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Every living thing must be able to reproduce and make offspring. Most of us are familiar with how humans and mammals make babies, but do all creatures reproduce in the same way? Do insects, like the beetle, give birth to little insects? Also in: French | Spanish

Subject:
Biology
Material Type:
Activity/Lab
Game
Lesson Plan
Provider:
Arizona State University School of Life Sciences
Provider Set:
Ask A Biologist
Author:
Dr. Biology
Jenny Drnevich
Date Added:
07/03/2009
How Do Cells Reproduce?
Conditions of Use:
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Rating

This activity illustrates the process of mitosis, or cell division, in yeast. Cells carry on the many functions needed to sustain life. The most important is the ability to reproduce.

Subject:
Biology
Material Type:
Lesson Plan
Reading
Teaching/Learning Strategy
Provider:
Kennedy Center ARTSEDGE
Provider Set:
ARTSEDGE
Author:
Rebecca Haden
Date Added:
10/10/2010
How Many Cells Are Born in a Day?
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In this lesson, students use calculation to predict the number of cells that result from a series of cell divisions. They then graph the results to represent their findings.

Material Type:
Lesson Plan
Reading
Teaching/Learning Strategy
Provider:
Kennedy Center ARTSEDGE
Provider Set:
ARTSEDGE
Author:
Rebecca Haden
Date Added:
10/10/2010
Human Biology - Reproduction (Student's Edition)
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The Reproduction Student Edition book is one of ten volumes making up the Human Biology curriculum, an interdisciplinary and inquiry-based approach to the study of life science.

Subject:
Biology
Material Type:
Activity/Lab
Textbook
Provider:
CK-12 Foundation
Provider Set:
CK-12 FlexBook
Author:
Program in Human Biology, Stanford University
Date Added:
02/04/2011
The King of Crustaceans: Lobsters
Conditions of Use:
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Rating

In the north Atlantic, the American Lobster is the undisputed king of crustaceans. It‰ŰŞs also a tremendously important commercial catch. While all the other fisheries are collapsing, why are lobsters resisting the trend? In this video, Jonathan goes out with a Maine lobsterman to learn why, and he dives down below to find the biggest lobsters he has ever seen. This segment won a New England Emmy Award! Please see the accompanying study guide for educational objectives and discussion points.

Subject:
Life Science
Oceanography
Physics
Material Type:
Diagram/Illustration
Lesson Plan
Provider:
Jonathan Bird's Blue World
Provider Set:
Jonathan Bird's Blue World
Author:
Jonathan Bird Productions
Oceanic Research Group
Date Added:
01/18/2011
Life Cycle of a Seed Plant
Conditions of Use:
Read the Fine Print
Rating

In this interactive activity adapted from the University of Alberta, learn about each step in the life cycle of a seed plant.

Subject:
Life Science
Ecology
Forestry and Agriculture
Material Type:
Activity/Lab
Interactive
Provider:
PBS LearningMedia
Provider Set:
PBS Learning Media Common Core Collection
Teachers' Domain
Author:
National Science Foundation
WGBH Educational Foundation
Date Added:
08/09/2007
Mandarinfish
Conditions of Use:
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Rating

Even experienced divers rarely get to see the Mandarinfish, a colorful reef fish that is so shy, it only comes out of hiding for a half-hour a day. In this video, Jonathan travels to the south Pacific to film spawning Mandarinfish and witnesses an incredible secret ritual. Please see the accompanying study guide for educational objectives and discussion points.

Subject:
Life Science
Ecology
Forestry and Agriculture
Oceanography
Material Type:
Diagram/Illustration
Lesson Plan
Provider:
Jonathan Bird's Blue World
Provider Set:
Jonathan Bird's Blue World
Author:
Jonathan Bird Productions
Oceanic Research Group
Date Added:
10/01/2009
Mangrove Forests
Conditions of Use:
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Rating

Where the tropical ocean meets the sea, a peculiar kind of plant thrives in shallow, salty water. These mangrove plants are incredibly important for shoreline protection and baby fish habitats. In this video, Jonathan investigates life in mangroves by visiting both Caribbean and Pacific mangroves. Please see the accompanying study guide for educational objectives and discussion points.

Subject:
Life Science
Chemistry
Oceanography
Material Type:
Diagram/Illustration
Lesson Plan
Provider:
Jonathan Bird's Blue World
Provider Set:
Jonathan Bird's Blue World
Author:
Jonathan Bird Productions
Oceanic Research Group
Date Added:
05/05/2010
The Mating Game
Conditions of Use:
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Rating

This interactive feature from the Evolution Web site takes a lighthearted but informative look at some of the strategies various organisms use to reproduce.

Subject:
Life Science
Material Type:
Activity/Lab
Interactive
Provider:
PBS LearningMedia
Provider Set:
PBS Learning Media: Multimedia Resources for the Classroom and Professional Development
Teachers' Domain
Author:
Clear Blue Sky Productions
National Science Foundation
WGBH Educational Foundation
Date Added:
09/26/2003
Meiosis
Conditions of Use:
Read the Fine Print
Rating

Meiosis is the process by which gametes (eggs and sperm) are made. Gametes have only one set of chromosomes. Therefore, meiosis involves a reduction in the amount of genetic material. Each gamete has only half the chromosomes of the original germ cell. Explore meiosis with a computer model of dragons. Run meiosis, inspect the chromosomes, then choose gametes to fertilize. Predict the results of the dragon offspring and try to make a dragon without legs. Learn why all siblings do not look alike.

Subject:
Life Science
Genetics
Mathematics
Material Type:
Activity/Lab
Data Set
Lecture Notes
Provider:
Concord Consortium
Provider Set:
Concord Consortium Collection
Author:
The Concord Consortium
Date Added:
01/13/2012
Microbiology
Conditions of Use:
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Rating

This course will cover a range of diverse areas of microbiology, including virology, bacteriology, and even applied microbiology. This course will focus on the medical aspects of microbiology, as medical research has been the primary motivator in microbiology research. Upon successful completion of this course, the student will be able to: explain how organisms are classified using taxonomy, focusing on the domains Archaea, Bacteria, and Eukarya; describe the chemical building blocks and metabolic processes important to sustain microbial life; identify the major principles of microbiology and describe the relationship between microbes and other living organisms; discuss pathogenic microbes and their epidemiology; differentiate between microorganisms based on their shape, size, arrangement, staining, and culture characteristics; outline antimicrobial methods including antibiotic use; explain how the human body protects itself; list uses for microbiology in food and beverage preparation and industry. (Biology 307)

Subject:
Biology
Material Type:
Full Course
Provider:
The Saylor Foundation
Date Added:
11/16/2011
Microscope Imaging Station
Conditions of Use:
Remix and Share
Rating

This site shows what blood is, what happens when the immune system goes awry, what are stem cells are, and more. See videos exploring cell structure and function, cell development and motility, plankton, plants, and protozoa. Learn how the sea urchin helps us understand genes, reproduction, and cancer.

Subject:
Biology
Material Type:
Activity/Lab
Provider:
Exploratorium
Date Added:
04/24/2007
Mitosis Crossword Puzzle
Conditions of Use:
Read the Fine Print
Rating

This mitosis crossword puzzle uses vocabulary from CELLS alive! If you have trouble and need a hint, you can use the "Search this Site" engine in the lefthand menu.

Subject:
Education
Life Science
Material Type:
Activity/Lab
Diagram/Illustration
Provider:
SMARTR
Provider Set:
SMARTR: Virtual Learning Experiences for Youth
Date Added:
11/06/2010
Natural Selection and Antibiotic Resistant Bacteria
Conditions of Use:
Remix and Share
Rating

In this problem-based learning module, students will examine how natural selection is involved in the development of antibiotic resistant bacteria.  They will evaluate methods to preventing antibiotic resistant bacteria from developing.  Finally students will synthesize a plan to educate community members on preventing the development of antibiotic resistant bacteria.

Subject:
Environmental Science
Health, Medicine and Nursing
Material Type:
Lesson Plan
Author:
Blended Learning Teacher Practice Network
Date Added:
01/18/2018
Plant Biology
Conditions of Use:
No Strings Attached
Rating

The field of plant physiology includes the study of all the internal activities of plants—those chemical and physical processes associated with life as they occur in plants. This includes study at many levels of scale of size and time. At the smallest scale are molecular interactions of photosynthesis and internal diffusion of water, minerals, and nutrients. At the largest scale are the processes of plant development, seasonality, dormancy, and reproductive control. Major subdisciplines of plant physiology include phytochemistry (the study of the biochemistry of plants) and phytopathology (the study of disease in plants). The scope of plant physiology as a discipline may be divided into several major areas of research.

Subject:
Biology
Botany
Material Type:
Module
Provider:
African Virtual University
Provider Set:
OER@AVU
Author:
Rémi Rakotondradona
Date Added:
02/27/2018
Plants and Animals, Partners in Pollination
Conditions of Use:
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Rating

This site helps students see how plants and animals interact to accomplish pollination. Students (Grades 3-8) identify plant and animal parts involved in pollination, connections between pollination and food production, relationships between pollinators and the plants they pollinate, and ways flowers have adapted to encourage pollination.

Subject:
Education
Biology
Botany
Material Type:
Lesson Plan
Provider:
Smithsonian Institution
Provider Set:
Smithsonian Center for Education and Museum Studies
Date Added:
09/10/2004
Primitive Insects of the Congaree Swamp
Conditions of Use:
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Rating

In this video segment from NatureScene, observe dragonflies and mayflies near Cedar Creek at Congaree Swamp National Park.

Subject:
Life Science
Ecology
Forestry and Agriculture
Material Type:
Lecture
Provider:
PBS LearningMedia
South Carolina ETV
Provider Set:
Teachers' Domain
Author:
SCETV
The William and Flora Hewlett Foundation
Date Added:
08/20/2008
Public Health Biology
Conditions of Use:
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Rating

Offers an integrative molecular and biological perspective on public health problems. Explores population biology and ecological principles underlying public health and reviews molecular biology in relation to public health biology. Modules focus on specific diseases of viral, bacterial, and environmental origin. Uses specific examples of each type to develop the general principles that govern interactions among susceptible organisms and etiologic agents. Devotes special attention to factors that act in reproduction and development. Places emphasis on common elements encountered in these modules. These may include origin and dissemination of drug resistance, organization and transmission of virulence determinants, modulation of immune responses, disruption of signal transduction pathways, and perturbation of gene expression. Also considers the role of the genetic constitution of the host.

Subject:
Health, Medicine and Nursing
Material Type:
Full Course
Lecture Notes
Syllabus
Provider:
Johns Hopkins Bloomberg School of Public Health
Provider Set:
JHSPH OpenCourseWare
Author:
Glass, Gregory
Ketner, Gary
Krag, Sharon
Yager, James
Zirkin, Barry
Date Added:
02/16/2011