| Description |
1 online resource (vii, 233 pages) |
| Contents |
Intro -- Preface -- Contents -- Part I: Genetic Regulation of the Sex Spectrum -- Chapter 1: Spectrum of Sex in a Horn of the Japanese Rhinoceros Beetle -- 1.1 Introduction -- 1.2 Sex-Determining Molecular Mechanism in Holometabolous Insects -- 1.3 Sex Spectrum in T. dichotomus Horn Visualised by Manipulating the Sex Determination Pathway -- References -- Chapter 2: Sexual Differentiation in Dragonflies and Damselflies -- 2.1 Introduction -- 2.2 Sex Determination System in Insects -- 2.3 Sex Chromosomes and Chromosome Number Variations in Dragonflies and Damselflies |
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2.4 Sexual Dimorphism, Adult Color Transition, and Female Color Polymorphism of Dragonflies and Damselflies -- 2.5 Sex Determination Cascades in Insects -- 2.6 Molecular Mechanisms Underlying Sexual Differentiation in Ischnura Damselflies -- 2.7 Molecular Mechanisms Underlying Wax-Based Sexual Differentiation in Dragonflies -- 2.8 Conclusion and Perspective -- References -- Chapter 3: Dimorphic Female-Limited Batesian Mimicry in Two Papilio Butterflies -- 3.1 General Introduction -- 3.2 Characteristic Traits of Mimetic/Non-mimetic P. polytes and P. memnon Females and Males |
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3.3 Chemical and Physical Properties of Pigments in Wing Scales in Two Papilio Butterflies -- 3.4 Identification of Responsible Genes and Supergene Structure for the H and A Locus -- 3.5 Evolutionary Process of the Mimicry Supergene in Two Papilio Butterflies -- 3.6 Expression Profiles of Genes Inside the Mimicry Supergene -- 3.7 Functional Analysis of the dsx Gene and Downstream Genes Controlled under Mimetic Dsx -- 3.8 Cost-Benefit Balance in Batesian Mimicry of P. polytes: Sexual Strategy Versus Mimicry -- References -- Chapter 4: Spectrum of Sex Chromosomes in Mammals -- 4.1 Large X, Small Y |
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4.2 XO Males Without SRY -- 4.3 XO/XO System in Spiny Rats, Genus Tokudaia -- 4.4 Y Loss in the XO Spiny Rat -- 4.5 Avoidance of a Y Chromosome Loss in XY Spiny Rat -- 4.6 XCI in the Genus Tokudaia -- 4.7 Independent Losses of the Y Chromosome in the Mole Vole, Genus Ellobius -- 4.8 African Pygmy Mouse, XY Females -- 4.9 Creeping Vole, XX Males -- 4.10 Sox9 Regulation in Atypical Sex Chromosomes -- References -- Chapter 5: The Evolutionary Aspects of the Mammalian Sex-Determining Gene SRY -- 5.1 The Mammalian Sex Determination Gene SRY -- 5.2 Function of Sry in Sex Determination |
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5.3 Genetic Structure of Sry -- 5.4 Discovery of Two-Exon Sry (Sry-T) -- 5.4.1 Identification of Mouse Sry Exon2 -- 5.4.2 Sry-T Is Essential for Testis Development -- 5.4.3 Existence of a ̀̀Degron ́́in the SRY-S C-Terminus -- 5.4.4 Reconsidering Previous Research in Light of Sry-T Discovery -- 5.5 Evolution of the Y Chromosome and Sry -- 5.6 Consideration of the Evolution of Sry Exons from the Viewpoint of ̀̀Sex Spectrum ́́ -- 5.7 Conclusion and Future Directions -- References -- Part II: Endocrine Regulation of the Sex Spectrum |
| Summary |
This book introduces cutting-edge studies on the spectrum of sex. The sex spectrum can be understood as an interwoven mechanism sustaining graded phenotypes between the two sexes. The book overviews three elements that develop the sex spectrum: genetics, the endocrine system, and the environment. Part I discusses the genetic regulation during sex determination, which often results in a mixture of two sexes or sex reversal. The evolutionary aspects of the genetic determinants are also discussed. Part II presents the involvement of endocrine regulation in the sex spectrum, which covers a broad range of phenotypic events, including sexual behavior and metabolism. Interestingly, sex hormones can also act as sex determinants. Finally, Part III shows that intrinsic factors, such as sex-determining genes and sex hormones, are not the only factors in sex development. The environment surrounding organisms, such as symbiosis and metabolism, act on the sex as critical factors, generating the sex spectrum. Determination and development of the two sexes have been a topic of great interest and a long-standing issue in biology. The book updates the conventional view that biological sex is fixed after birth and sets new perspectives for understanding sex as a spectrum manifested in multiple phenomena. Each chapter contributed by leading experts explains the sex spectrum in various organisms and their underlying mechanisms from the latest ongoing studies. The book provides a valuable resource for not only experts in developmental biology, physiology, and medical science, but also non-scientists and anyone interested in the topic |
| Notes |
Online resource; title from PDF title page (SpringerLink, viewed November 23, 2022) |
| Subject |
Phenotype.
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Sex.
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sexuality.
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Phenotype
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Sex
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| Form |
Electronic book
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| Author |
Tanaka, Minoru, 1961- editor.
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Tachibana, Makoto, editor
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| ISBN |
9789811953590 |
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9811953597 |
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