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See time-lapse microphotography of blastomeres created by mitotic cleavage of embryonic cells

See time-lapse microphotography of blastomeres created by mitotic cleavage of embryonic cells

Learn about mitotic cleavage of embryonic cells by watching this time-lapse microphotography of the process.
Encyclopædia Britannica, Inc.
  • Encyclopædia Britannica, Inc.
    One makes music. One gives advice in Pinocchio. Which is which?
    Grasshoppers vs. Crickets: What's the Difference?
    Side-by-side comparison of a brown cricket on the left and a camouflaged grasshopper on the right, separated by a large white question mark.
  • © Open University (A Britannica Publishing Partner)
    Learn about some of the brightest northern constellations: Orion, the Big Dipper, and Cassiopeia.
    Northern Constellations Such as Orion, the Big Dipper, and Cassiopeia
    Night sky with constellation lines drawn over stars, highlighting Ursa Major, the Big Dipper, and Orion above a dark landscape with silhouetted trees.
  • Encyclopædia Britannica, Inc.
    This creature is more than just a cuter anteater.
    Media Editors: Michele Metych , Lauren Sims
    What is the Tamandua?
    A tamandua, or lesser anteater, extends its long tongue. Overlaid text reads "16 inch TONGUE" with an arrow pointing to the tongue. Forest background.
  • Encyclopædia Britannica, Inc.
    James Watson and Francis Crick revolutionized the study of genetics when they discovered the structure of DNA.
    Study DNA's double helix structure to learn how the organic chemical determines an organism's traits
    Study DNA's double helix structure to learn how the organic chemical determines an organism's traits
  • © Open University (A Britannica Publishing Partner)
    Basic similarities between cells and ways cells may vary depending on their function.
    Functions of cells
    Functions of cells
  • Encyclopædia Britannica, Inc.
    Learn about cell division in the developing embryo and in mature cells.
    Watch: How cell division works
    Watch: How cell division works
  • Encyclopædia Britannica, Inc.
    All living things are composed of cells.
    How Are Plant Cells Different from Animal Cells?
    How Are Plant Cells Different from Animal Cells?
Related Articles: blastomere , cell , cell division , cleavage , zygote

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They Created a Cell That’s Almost Alive. What to Do With It Now? • Oct. 14, 2026, 3:00 AM ET (New York Times)
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