Theodosius Dobzhansky on Hybrid Sterility and Speciation

  title={Theodosius Dobzhansky on Hybrid Sterility and Speciation},
  author={Jerry A. Coyne},
  pages={5 - 7}
  • J. Coyne
  • Published 2015
  • Biology, Medicine
  • Genetics
![Figure][1] It is a truth universally acknowledged that Genetics and the Origin of Species , Theodosius Dobzhansky’s acclaimed 1937 book, launched the modern evolutionary synthesis, characterized by uniting the findings of genetics with the facts of natural history. Dobzhansky’s title 
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Selfish X chromosomes and speciation
  • M. Patten
  • Biology, Medicine
  • Molecular ecology
  • 2018
It is suggested that meiotic drive is not the only intragenomic conflict to involve the X chromosome and contribute to hybrid incompatibility and should lead to co‐evolution within populations and divergence between them, thus increasing the likelihood of incompatibilities in hybrids. Expand
Genomic and transcriptomic investigation of reproductive incompatibility in Drosophila
Baião, G. C. 2020. Genomic and transcriptomic investigation of reproductive incompatibility in Drosophila. Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science andExpand
Neurospora tetrasperma crosses heterozygous for hybrid translocation strains produce rare eight-spored asci-bearing heterokaryotic ascospores
It is shown that crosses of all the TNt strains with single-mating-type derivatives of the standard N. tetrasperma pseudohomothallic strain 85 (viz. TNta × 85A or TNtA × 85a) can produce rare eight-spored asci that contain heterokaryotic ascospore, or ascospores with other unexpected genotypes. Expand
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Origin of Species
IN Darwin's great work on this subject he claims that Dean Herbert, in 1822 and 1837, held that “single species of each genus were created in an originally highly plastic condition, and that theseExpand
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The genus Drosophila, contrary to the old idea, is quite rich in “borderline cases” between race and species, and two subspecies of D. pallidipennis which have developed slight morphological differences and partial hybrid sterility are reported. Expand
Genetics and the Origin of Species
This research attacked the mode confusion problem by exploring the role of mutation as a basis for racial and SPECIFIC differences in biodiversity. Expand
Dobzhansky's genetics and the origin of species: is it still relevant?
Genetics and the Origin of Species seemed to be essentially a treatise in observational biology, speaking in the language and using the biological materials of experimentalists and natural historians, and two things that were unique to DOBZHANSKY’S book need to be emphasized. Expand
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In 1922 a strain of Drosophila a$inis was found in which occasional males produced families consisting almost entirely of females, and GERSHENSON found the “sex ratio” gene to be present (heterozygous) in two of nineteen wild females studied. Expand
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Comparison of the amount of polymorphism in populations of different bioclimatic regions of Brazil suggests that this polymorphism enables the species to become adapted to the diversity of habitats in which it lives, and that the amount is proportional to the variety of environments which are exploited by a given race or population. Expand
Genetics of Natural Populations. I. Chromosome Variation in Populations of Drosophila Pseudoobscura Inhabiting Isolated Mountain Ranges.
A comparison of the genetic constitutions of several free-living popu' lations from the same general region, and yet isolated from each other, may be of interest. Expand
Studies on Hybrid Sterility IV. Transplanted Testes in Drosophila Pseudoobscura.
By means of appropriate transplants, it is possible to determine whether hybrid sterility, in a particular case, is determined by the constitution of the gonad itself (autonomous development), or whether the genetic Constitution of the surrounding tissues is a contributing factor (dependent development). Expand
Sex chromosomes and speciation in Drosophila.
New genetic analyses in Drosophila confirm that the X is a hotspot for hybrid male sterility factors, providing a proximate explanation for the large X-effect. Expand
Studies on Hybrid Sterility. II. Localization of Sterility Factors in Drosophila Pseudoobscura Hybrids.
It remains possible that suppression of meiotic pairing may be caused by different mechanisms in different cases, and that sometimes there is no cause and effect relation between the failure of paking and the sterility. Expand