Summary
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1.
There are two types of spermatogenesis in every testis ofScutigera forceps, one of which follows orthodox lines while the other is unusual in several respects.
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2.
The unusual features of the latter comprise extraordinary spermatogonial generations, and omission of pairing in the first spermatocyte division. Nevertheless there is a reduction in the second division and all resulting spermatids carry a haploid set of chromosomes.
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3.
Cytophotometric analysis shows that the two different types of spermatogenesis are correlated with differences in the DNA and “histone” contents of the nuclei.
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The research during 1953–1954 was conducted under a National Science Foundation Fellowship.
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Ansley, H.R. A cytological and cytophotometric study of alternative pathways of meiosis in the house centipede (Scutigera forceps, rafinesque). Chromosoma 6, 656–695 (1953). https://doi.org/10.1007/BF01259955
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DOI: https://doi.org/10.1007/BF01259955