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Netherlands Journal of Zoology

Article . 1992 . Peer-reviewed

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A New Hypothesis On the Evolution of Sex Determination in Vertebrates; Big Females Zw, Big Males Xy

descriptionPublicationkeyboard_double_arrow_right Article , Journal 01 Jan 1992Publisher:Walter de Gruyter GmbHJournal:Netherlands Journal of Zoology, volume 43, pages 260-273 (eissn: 1568-542X,

Authors: Sarah B. M. Kraak; Ellen M.A. De Looze;

doi: 10.1163/156854293x00034

A New Hypothesis On the Evolution of Sex Determination in Vertebrates; Big Females Zw, Big Males Xy

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Abstract

Why are there two chromosomal sex-determining mechanisms in vertebrates; ZW/ZZ, meaning female heterogamety, and XX/XY, meaning male heterogamety? We propose an evolutionary explanation. Transition from environmental sex determination to genetic sex determination can result when an allele that accelerates embryonal or larval growth takes over the role of environment in bringing about differential growth. Species with environmental sex determination showing female size advantage, are predisposed to evolve the ZW/ZZ mechanism, whereas species with male size advantage are predisposed to evolve the XX/XY mechanism.

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University of Groningen
Netherlands

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	citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	49
	popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.	Top 10%
	influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	Top 10%
	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Average

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medical and health sciences

basic medicine

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medical and health sciences

basic medicine

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