Abstract
STUDY of the distribution of satellite DNA during the later stages of spermiogenesis led to a model in which chromosomes of the mature sperm nucleus are U-shaped with posterior centromeres1,2. We have now studied a closely related chromosome marker—constitutive heterochromatin—and, using C banding techniques3, have found a polarised arrangement of chromocentres in spermatids of several newt species.
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References
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SCHMID, M., KRONE, W. Acrosomal chromocentre in newt spermiogenesis. Nature 257, 795–797 (1975). https://doi.org/10.1038/257795a0
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DOI: https://doi.org/10.1038/257795a0
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