This video segment explores the benefits and pitfalls of cloning as a means of reproduction. From Evolution: "Why Sex?" [3:17] Accompanied by a short background essay.
Videos, texts, activities, and assessments helping students learn about asexual and sexual reproduction.
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Explore the differences between the two methods of reproduction. Learners will identify types of asexual reproduction and recognize how plants and animals sexually reproduce.
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Biology 2e is designed to cover the scope and sequence requirements of a typical two-semester biology course for science majors. The text provides comprehensive coverage of foundational research and core biology concepts through an evolutionary lens. Biology includes rich features that engage students in scientific inquiry, highlight careers in the biological sciences, and offer everyday applications. The book also includes various types of practice and homework questions that help students understand—and apply—key concepts. The 2nd edition has been revised to incorporate clearer, more current, and more dynamic explanations, while maintaining the same organization as the first edition. Art and illustrations have been substantially improved, and the textbook features additional assessments and related resources.
By the end of this section, you will be able to do the following:
Describe advantages and disadvantages of asexual and sexual reproduction
Discuss asexual reproduction methods
Discuss sexual reproduction methods
By the end of this section, you will be able to do the following:
Explain that meiosis and sexual reproduction are highly evolved traits
Identify variation among offspring as a potential evolutionary advantage of sexual reproduction
Describe the three different life-cycle types among sexually reproducing multicellular organisms.
By the end of this section, you will be able to do the following:
Describe the behavior of chromosomes during meiosis, and the differences between the first and second meiotic divisions
Describe the cellular events that take place during meiosis
Explain the differences between meiosis and mitosis
Explain the mechanisms within the meiotic process that produce genetic variation among the haploid gametes
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.
This 27-minute video lesson looks at the phases of Meiosis. [Biology playlist: Lesson 11 of 71].
Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.
This 14-minute video lesson covers the chromosomal basis for gender and sex-linked traits. [Biology playlist: Lesson 17 of 71].
Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.
Nikki is learning about plant seed dispersal methods. Join in and learn how this is important to plant reproduction.
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.
Students work in pairs to compare five aspects of an organism that reproduces sexually, asexually, or both sexually and asexually. The activity comes with a chart for the students to fill out and with information sheets on twelve organisms. As a class, students share their comparisons and generate a list of general characteristics for each mode of reproduction and then discuss the advantages and disadvantages of both. Included in the discussion are reproductive mechanisms and genetic variation.
Explore the different ways that animals and plants reproduce.
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Understand the process of meiosis to produce two sex cells, or gametes.
A free CK-12 account is required to view all materials.
