![]() Why is cleavage indeterminate?Īn embryonic cleavage is said to be indeterminate when it produces cells with a complete set of undisturbed animal or vegetal cytoarchitectural features and when isolated can individually develop into a whole organism. Cleavage produces blastomeres which are qualitatively equipotential or totipotent. Indeterminate: early embryonic cells retain capacity to develop into a complete embryo if isolated from other cells. ![]() How do indeterminate cleavage and determinate cleavage differ in terms of developmental cell fates?ĭeterminate: the developmental fate of each embryonic cell is established very early. This form of cleavage occurs in mammals such as humans. Here, cleavage furrows are formed all the way through the zygote. In eggs with no yolk or only a moderate amount of yolk, cytokinesis completely divides the cell and cleavage is holoblastic. Which type of cleavage occurs in human egg? Deuterostome condition: The embryo’s blastopore becomes the posterior (tail) end. Indeterminate cleavage: Cells separated in early embryonic stages can develop into an entire embryo. Radial cleavage: The 8-celled stage has 2 tiers of 4 cells each, with each cell directly below or above another. What is radial and indeterminate cleavage?
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March 2023
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