Meiotic drive and sex chromosome cycling. 2004

David W Hall
Section of Integrative Biology, 1 University Station C0930, University of Texas, Austin, Texas 78712, USA. davehall@uts.cc.utexas.edu

Sex-linked meiotic drive is found in a broad variety of taxa, including insects, birds, and mammals. In populations of some species, we see four types of sex chromosomes segregating: normal and driving X chromosomes and susceptible and resistant Y chromosomes. A theoretical analysis shows that a stable four-chromosome equilibria is a more common outcome in these systems than previously recognized. Cycling of sex chromosome frequencies and associated changes in the sex ratio are other predicted outcomes. The absence of cycling in nature may be due to migration among populations.

UI MeSH Term Description Entries
D008297 Male Males
D008957 Models, Genetic Theoretical representations that simulate the behavior or activity of genetic processes or phenomena. They include the use of mathematical equations, computers, and other electronic equipment. Genetic Models,Genetic Model,Model, Genetic
D011110 Polymorphism, Genetic The regular and simultaneous occurrence in a single interbreeding population of two or more discontinuous genotypes. The concept includes differences in genotypes ranging in size from a single nucleotide site (POLYMORPHISM, SINGLE NUCLEOTIDE) to large nucleotide sequences visible at a chromosomal level. Gene Polymorphism,Genetic Polymorphism,Polymorphism (Genetics),Genetic Polymorphisms,Gene Polymorphisms,Polymorphism, Gene,Polymorphisms (Genetics),Polymorphisms, Gene,Polymorphisms, Genetic
D004641 Emigration and Immigration The process of leaving one's country to establish residence in a foreign country. Immigration,Labor Migration,Border Crossing,Chain Migration,Emigration,In-Migration,International Migration,Out-Migration,Return Migration,Settlement and Resettlement,Temporary Migration,Turnaround Migration,Border Crossings,Chain Migrations,Crossing, Border,Crossings, Border,Emigrations,Immigration and Emigration,Immigrations,In Migration,In-Migrations,International Migrations,Labor Migrations,Migration, Chain,Migration, International,Migration, Labor,Migration, Return,Migration, Temporary,Migration, Turnaround,Migrations, Chain,Migrations, International,Migrations, Labor,Migrations, Return,Migrations, Temporary,Migrations, Turnaround,Out Migration,Out-Migrations,Resettlement and Settlement,Return Migrations,Temporary Migrations,Turnaround Migrations
D005260 Female Females
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D012730 Sex Chromosomes The homologous chromosomes that are dissimilar in the heterogametic sex. There are the X CHROMOSOME, the Y CHROMOSOME, and the W, Z chromosomes (in animals in which the female is the heterogametic sex (the silkworm moth Bombyx mori, for example)). In such cases the W chromosome is the female-determining and the male is ZZ. (From King & Stansfield, A Dictionary of Genetics, 4th ed) Gonosomes,Chromosome, Sex,Chromosomes, Sex,Gonosome,Sex Chromosome
D012744 Sex Ratio The number of males per 100 females. Ratio, Sex,Ratios, Sex,Sex Ratios
D020090 Chromosome Segregation The orderly segregation of CHROMOSOMES during MEIOSIS or MITOSIS. Chromosome Segregations,Segregation, Chromosome,Segregations, Chromosome

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