It is now common to find fate maps in introductory embryology texts. The first fate maps date back to the 1880s and in 1905 the first comprehensive collection ofĪscidian (sea squirt) fate maps was published byĮdwin Conklin. In essence, each fate map portrays the developmental history of each cell.įate maps were developed as a way of tracing a particular region as it develops from an early embryo into a differentiatedīody plan. This chart or graphical representation detailing the fate of each part of an early embryo is referred to as a fate map. Labeling individual cells within their germ layers allows for a pictorial interpretation of gastrulation. Early development occurs in a highly organized and orchestrated manner and has long attracted the interest of developmental biologists and embryologists.Ĭell lineage, or the study of the developmental differentiation of aīlastomere, involves tracing a particular cell ( blastomere) forward from its position in one of the three germ layers.
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