Other, Manual


This video (11:43) is thirteenth in the Crash Course Biology series. It covers meiosis, the special type of cell division that is necessary for sexual reproduction in eukaryotic organisms.1) Homologous Chromosome Pairs 2:102) Primary Oocytes 3:303) Primary Spermatocytes 3:304) Meiosis 2:595) Interphase I 4:046) Prophase I 4:37a) Crossover 5:05b) Recombination 5:057) Metaphase I 7:538) Anaphase I 8:059) Telophase I 8:1910) Prophase II 8:5711) Metaphase II 9:2312) Anaphase II 9:2813) Telophase II 9:32


  • Science > General
  • Science > Biology
  • Science > Life Sciences

Education Levels:

  • Grade 9
  • Grade 10
  • Grade 11
  • Grade 12
  • Special Education


eproduction sexual reproduction sex cell sperm egg meiosis biology cell replication chromosome gene allele homologous chromosome haploid cells prophase metaphase anaphase telophase oocyte spermatocyte centrosome microtubule crossover homologous recombination natural selection cytokinesis polar body endosperm



Access Privileges:

Public - Available to anyone

License Deed:

Creative Commons Attribution Non-Commercial
Update Standards?

SCI.9-12.SC.912.L.16.16: Science

Describe the process of meiosis, including independent assortment and crossing over. Explain how reduction division results in the formation of haploid gametes or spores.

SCI.9-12.SC.912.L.16.17: Science

Compare and contrast mitosis and meiosis and relate to the processes of sexual and asexual reproduction and their consequences for genetic variation.
Curriki Rating
On a scale of 0 to 3
On a scale of 0 to 3

This resource was reviewed using the Curriki Review rubric and received an overall Curriki Review System rating of 3, as of 2014-08-06.

Component Ratings:

Technical Completeness: 3
Content Accuracy: 3
Appropriate Pedagogy: 0

Reviewer Comments:

Brothers John and Hank Green have created these engaging and accurate “crash course” videos on topics ranging from chemistry to world history, biology, literature, and ecology.  Each video is 10 – 15 minutes long and suitable for all ages, though the content (and humor) may be best suited for middle school through adult learners.  You can learn more about the specific contents of this particular video (from the Biology collection) by clicking the information tab above.  These videos serve multiple purposes well from use in the classroom to facilitating one’s own lifelong learning.  
Curriki Review System
August 6, 2014

This video is part of the larger collection called Crash Course Biology. You can learn more about this collection by reading its review and comments. You can also find the most recent Crash Course videos in all subjects at the Crash Course YouTube channel .

Non-profit Tax ID # 203478467