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.

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

By the end of this section, you will be able to:List the features that distinguish the kingdom Animalia from other kingdomsExplain the processes of animal reproduction and embryonic developmentDescribe the roles that Hox genes play in development

By the end of this section, you will be able to:Compare the mechanisms and methods of natural and artificial asexual reproductionDescribe the advantages and disadvantages of natural and artificial asexual reproductionDiscuss plant life spans

Ecology For All! Is an ecology text designed in modules so that instructors can choose the pieces that make sense to assign in their context. This book has been in development for several years and is a collaborative effort of authors at Gettysburg College, Franklin & Marshall College, and University of Pittsburgh. The textbook covers a wide range of topics including Introduction to Ecology, Evolution, Adaptations to the Physical Environment, various ecological communities, Population Ecology, Behavioral Ecology, Species Interactions, Ecological Succession, Biogeochemical Cycles, Landscape Ecology, Biodiversity, Conservation Biology, and Human Impact on Global Climate among others. The authors have presented on it at the Ecological Society of America meeting and the book continues to evolve.

In this 7th grade science lesson, students identify desirable traits in plants and take cuttings from parent plants to facilitate asexual propagation and produce offspring with identical DNA.

This lesson opens with students looking for evidence that growth is occurring in living organisms. Students will use a group of pictures of an animal at different stages of its life to find evidence of the changes that occur.

This lesson presents an overview of how plants are propagated. Upon completion of this unit students will know how to propagate plants both sexually and asexually. 

This resource is a phenomenon-based adaption to the Smithsonian's STCMS Genes and Molecular Machines kit. The anchoring phenomenon event features four families (apple, hydra, human and sea star). Students will investigate and explore the genetic causes of why some families look similar and others look different. Students will use models to explain their thinking throughout the intentional sequence of lessons.

When it comes to animal reproduction, there’s no one-size-fits-all strategy. Some animals need a mate, others don’t, and for some, it depends! In this episode, we’ll learn about sexual and asexual reproduction, internal and external fertilization, and all the ways that life, uh… finds a way.
Chapters:
Introduction: Reproduction
Asexual reproduction
Sexual Reproduction
Fertilization
Sexes
Review & Credits
Credits