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General Biology:CH47 Animal Development and Embryology

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  • Fertilization

    Process in which male and female gametes fuse to form a diploid zygote.

  • Zygote

    A diploid, single cell formed post fertilization, the first stage of embryonic development.

  • Cleavage

    Rapid cell divisions of the zygote without growth, producing smaller cells called blastomeres.

  • Blastula

    A hollow sphere of many cells formed from continued cleavage of the morula, containing a fluid-filled cavity called the blastocoel.

  • Gastrulation

    Process where cells of the blastula divide and move inward to form the three germ layers of the embryo.

  • Gastrula

    The embryo stage after gastrulation, characterized by three germ layers: ectoderm, mesoderm, and endoderm.

  • Neurulation

    Formation of the neural tube from ectoderm cells, which will develop into the brain and spinal cord.

  • Morphogenesis

    Process by which cells change shape, position, and survival to form the body plan, including gastrulation and organogenesis.