Chapter 25
Reproduction and Development
![Spermatogenesis](https://cloudfront.jove.com/files/media/science-education/science-education-thumbs/10905.jpg)
Spermatogenesis is the process by which haploid sperm cells are produced in the male testes. It starts with stem cells located close to the outer rim…
![Oogenesis](https://cloudfront.jove.com/files/media/science-education/science-education-thumbs/10906.jpg)
In human women, oogenesis produces one mature egg cell or ovum for every precursor cell that enters meiosis. This process differs in two unique ways…
![Cleavage and Blastulation](https://cloudfront.jove.com/files/media/science-education/science-education-thumbs/10908.jpg)
After a large-single-celled zygote is produced via fertilization, the process of cleavage occurs while zygotes travel through the uterine tube.…
![Gastrulation](https://cloudfront.jove.com/files/media/science-education/science-education-thumbs/10909.jpg)
Gastrulation establishes the three primary tissues of an embryo: the ectoderm, mesoderm, and endoderm. This developmental process relies on a series…
![Microscopy of Fission Yeast Sexual Lifecycle](https://cloudfront.jove.com/files/thumbs/53801_t.png)
The fission yeast Schizosaccharomyces pombe has been an invaluable model system in studying the regulation of the mitotic cell cycle progression, the…
![Analysis of Chromosome Segregation, Histone Acetylation, and Spindle Morphology in Horse Oocytes](https://cloudfront.jove.com/files/thumbs/55242_t.png)
The field of assisted reproduction has been developed to treat infertility in women, companion animals, and endangered species. In the horse,…