Summary
“Pale eggs” and “partial cleavage” are two mutations with a maternal effect that are found in the same family ofXenopus l. laevis. The pale eggs have animal hemispheres of a yellow to beige colour and give rise to normally pigmented tadpoles and frogs. The cells of pale embryos contain fewer melanosomes than those of controls. The partial cleavage eggs are characterized by an abnormality of cleavage visible from the eight-cell stage onwards, by abnormal yolk platelet distribution and abnormal cytological features. Cleaved, syncytial and uncleaved areas are observed in these eggs, which are lethal at the blastula stage.
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Droin, A., Fischberg, M. Two recessive mutations with maternal effect upon colour and cleavage ofXenopus l. laevis eggs. Wilhelm Roux' Archiv 193, 86–89 (1984). https://doi.org/10.1007/BF00848635
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DOI: https://doi.org/10.1007/BF00848635