This set of resources was developed and employed numerous times to help students clarify the frequent confusion about cells' chromosome number and ploidy level. It uses simplified stick diagrams to represent chromosomes and circles or oval to represent cells and includes a short, low-tech video tutorial that delivers the information, a worksheet that students can use to practice and test their understanding of the video materials, a set of clicker questions that address the same points as the worksheet, and instructor's notes.

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 the behavior of chromosomes during meiosisDescribe cellular events during meiosisExplain the differences between meiosis and mitosisExplain the mechanisms within meiosis that generate genetic variation among the products of meiosis

By the end of this section, you will be able to:Describe the behavior of chromosomes during meiosisDescribe cellular events during meiosisExplain the differences between meiosis and mitosisExplain the mechanisms within meiosis that generate genetic variation among the products of meiosis

An introduction to cellular and molecular biology. Major topics include the biochemical basis of life, cell biology, photosynthesis, respiration, mitosis, meiosis, genetics, DNA structure and replication and protein synthesis. Students engage the scientific method by designing, conducting and evaluating laboratory experiences that include selected topics in cell structure and function, enzymes, respiration, photosynthesis, genetics and molecular biology. NOTE: Students may receive credit for BIO 119 or BIO 126, but not for both.

This resource provides a fillable form pdf laboratory procedure and answer sheet for an online mitosis laboratory. It utilizes the a virtual onion root tip activity developed by D.K. Warren at The University of Arizona (http://www.biology.arizona.edu/cell_bio/activities/cell_cycle/cell_cycle.html). It was designed for use as a somatic cell division laboratory exercise in an introductory online biology course.

The lab utilizes a fillable form pdf lab answer sheet created by the instructor, Tina B. Jones.

Attributions and references are provided at the end of the laboratory write-up.

Please refer to the "Completing Lab Reports in Canvas Orientation Exercise" in OER Commons, also authored by Tina B. Jones, for student instructions on downloading, completing, and uploading the fillable form answer sheets in Canvas.

*Lab answer sheet created by instructor using Adobe Acrobat DC Pro.

This 27-minute video lesson looks at the phases of Meiosis. [Biology playlist: Lesson 11 of 71].

This 21-minute video explains the phases of mitosis. [Biology playlist: Lesson 10 of 71].

This 14-minute video lesson covers the chromosomal basis for gender and sex-linked traits. [Biology playlist: Lesson 17 of 71].

By the end of this section, you will be able to:Describe the three stages of interphaseDiscuss the behavior of chromosomes during karyokinesisExplain how the cytoplasmic content is divided during cytokinesisDefine the quiescent G0 phase

By the end of this section, you will be able to:Describe the three stages of interphaseDiscuss the behavior of chromosomes during karyokinesisExplain how the cytoplasmic content is divided during cytokinesisDefine the quiescent G0 phase

The human body is composed of trillions of cells. Each cell has a life cycle, in the same way that all living things do. In this seminar you will explore and reflect on how eukaryotic cells (that is, cells with a nucleus) reproduce and make copies of themselves.Sometimes there can be mistakes in the copying process, which can lead to cancer. Part of this lesson will show how cancers can happen.Additionally, you will be challenged to create a model of the process to demonstrate your learning of this topic.