רבייה והתפתחות

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 …

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 …

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 …

After a large-single-celled zygote is produced via fertilization, the process of cleavage occurs while zygotes travel through the uterine tube. Cleavage …

Gastrulation establishes the three primary tissues of an embryo: the ectoderm, mesoderm, and endoderm. This developmental process relies on a series of …

Neurulation is the embryological process which forms the precursors of the central nervous system and occurs after gastrulation has established the three …

Cell migration, the process by which cells move from one location to another, is essential for the proper development and viability of organisms …

During embryogenesis, cells become progressively committed to different fates through a two-step process: specification followed by determination. …