Question

What is epiboly? Please explain

Answer 1

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Epiboly describes one of the five major types of cell movements that occur in the Gastrulation stage of embryonic development of some organisms. Epibolic movement is the way in which a layer epithelial cells spreads. This can be achieved in multiple ways.

When undergoing epiboly, a monolayer of cells must undergo a physical change in shape in order to spread. Alternatively, multiple layers of cells can also undergo epiboly as the position of cells is changed or the cell layers undergo intercalation. While human embryos do not experience epiboly, this movement can be studied in sea urchins, tunicates, amphibians, and most commonly zebrafish.

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Answer 2

Epiboly is a cell movement that occurs in the early embryo, at the same time as gastrulation.

It is classified under "morphogenetic movements."

Morphogenetic movement- Movement of cells in the early embryo that change the shape or form of differentiating cells and tissues is referred to as morphogenetic movement.