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Chapter 25

Reprodução e Desenvolvimento

Chapter 25

Reproduction and Development

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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 of …
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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 from …
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During fertilization, an egg and sperm cell fuse to create a new diploid structure. In humans, the process occurs once the egg has been released from the …
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After a large-single-celled zygote is produced via fertilization, the process of cleavage occurs while zygotes travel through the uterine tube. Cleavage …
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Gastrulation establishes the three primary tissues of an embryo: the ectoderm, mesoderm, and endoderm. This developmental process relies on a series of …
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Neurulation is the embryological process which forms the precursors of the central nervous system and occurs after gastrulation has established the three …
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Cell migration, the process by which cells move from one location to another, is essential for the proper development and viability of organisms …
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During embryogenesis, cells become progressively committed to different fates through a two-step process: specification followed by determination. …
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The fission yeast Schizosaccharomyces pombe has been an invaluable model system in studying the regulation of the mitotic cell cycle progression, the …
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The field of assisted reproduction has been developed to treat infertility in women, companion animals, and endangered species. In the horse, assisted …