Abstract:
:Genetic segregation was studied in more than 1900 seedlings of an F2 between the maize (Zea mays L.) inbred lines T232 and CM37. Significant segregation distortion was observed at 11 of 17 segregating allozyme loci and at a single morphological marker locus distributed on 7 of the 10 chromosomes in the genome. Deviations from genotypic class expectations were small for most loci, and averaged 7.7 per cent. Percent transmission of the allele contributed by T232 varied from 47.7 per cent to 53.3 per cent. The allele donated by T232 was significantly under-represented for loci on chromosomes 1 and 8, whereas the allele contributed by CM37 was deficient for nine of the ten segregating loci on chromosomes 2, 3, and 6. In all cases, the parental origin of the deficient allele was consistent for markers on a chromosome. Evidence is presented that suggests the aberrant ratios arose from linkage of the markers with genetic factors affecting prezygotic transmission, and that a minimum of 5 such factors were operative, one on each of chromosomes 1, 2, 3, 6, and 8. In contrast to the multi-locus and multi-chromosomal distorted segregation observed in the F2, all loci in backcross progenies fit Mendelian expectations. It is suggested that this discrepancy reflects variable environmental selection pressures on genes that influence aspects of gamete competition.
journal_name
Heredity (Edinb)journal_title
Heredityauthors
Wendel JF,Edwards MD,Stuber CWdoi
10.1038/hdy.1987.44subject
Has Abstractpub_date
1987-04-01 00:00:00pages
297-301eissn
0018-067Xissn
1365-2540journal_volume
58 ( Pt 2)pub_type
杂志文章相关文献
HEREDITY文献大全abstract::The vertical transmission of Wolbachia in two species of spider mite was investigated and compared. One species, Tetranychus kanzawai Kishida, was infected with a modification negative strain of Wolbachia while the other species, Panonychus mori Yokoyama, was infected with a modification positive strain. The infection...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/sj.hdy.6800026
更新日期:2002-03-01 00:00:00
abstract::We report the first sex-linked loci in Oncorhynchus mykiss (rainbow trout). Previous cytological and breeding experiments have demonstrated an XX/XY sex determining system in this and other salmonid species. Joint segregation data from fathers indicated an average of 8.1 per cent recombination between HEX-2 and the se...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/hdy.1994.67
更新日期:1994-05-01 00:00:00
abstract::The ecological theory of adaptive radiation predicts that the evolution of phenotypic diversity within species is generated by divergent natural selection arising from different environments and competition between species. Genetic connectivity among populations is likely also to have an important role in both the ori...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/hdy.2010.161
更新日期:2011-03-01 00:00:00
abstract::We investigate the effects of consanguinity and population substructure on genetic health using the UK Asian population as an example. We review and expand upon previous treatments dealing with the deleterious effects of consanguinity on recessive disorders and consider how other factors, such as population substructu...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/sj.hdy.6800090
更新日期:2002-06-01 00:00:00
abstract::The primary sex-determining signal in the haplodiploid wasp Nasonia vitripennis is not known. In haplodiploid reproduction, unfertilized eggs typically develop into uniparental haploid males and fertilized eggs into biparental diploid females. Although this reproductive strategy is common to all Hymenoptera, sex-deter...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/sj.hdy.6800810
更新日期:2006-05-01 00:00:00
abstract::Estimating kinship is fundamental for studies of evolution, conservation, and breeding. Genotyping-by-sequencing (GBS) and other restriction based genotyping methods have become widely applied in these applications in non-model organisms. However, sequencing errors, depth, and reproducibility between library preps cou...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/s41437-020-0302-3
更新日期:2020-05-01 00:00:00
abstract::Colour polymorphisms have evolutionary significance for the generation and maintenance of species diversity. Demonstrating heritability of polymorphic traits can be challenging for wild populations of long-lived species because accurate information is required on trait expression and familial relationships. The Austra...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/s41437-019-0212-4
更新日期:2019-09-01 00:00:00
abstract::Allozyme electrophoresis was used to determine amount and structure of genetic variation within and between five congeneric haploid moss species: Polytrichum formosum, P. commune, P. uliginosum, P. piliferum and P. juniperinum. For the different species, gene diversity within populations (HS) ranged from very low (0.0...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1046/j.1365-2540.2000.00762.x
更新日期:2000-10-01 00:00:00
abstract::Temperature-dependent sex determination (TSD) was first reported in 1966 in an African lizard. It has since been shown that TSD occurs in some fish, several lizards, tuataras, numerous turtles and all crocodilians. Extreme temperatures can also cause sex reversal in several amphibians and lizards with genotypic sex de...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/hdy.2010.102
更新日期:2011-04-01 00:00:00
abstract::A model involving a specific pairing of homologous double-stranded nucleic acid molecules is applied to some parts of genetic recombination. The most original features of this application of the model relate to the initiation process, a part of which can be described by a highly compact and symmetrical structure. The ...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/hdy.1977.39
更新日期:1977-08-01 00:00:00
abstract::Southern Italy has a long history of human occupation and passage of different cultures since the Early Holocene. Repeated, ancient introductions of pigs in several geographic areas in Europe make it difficult to understand pig translocation and domestication in Italy. The archeozoological record may provide fundament...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/hdy.2016.74
更新日期:2017-02-01 00:00:00
abstract::RAPD-PCR polymorphisms at 57 presumptive loci were used to examine the breeding structure of the mosquito Aedes aegypti in Puerto Rico. Mosquitoes were sampled from 16 locations in six cities and samples were located in a nested spatial design to examine local patterns of gene flow. Allele frequencies were estimated a...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/hdy.1996.50
更新日期:1996-04-01 00:00:00
abstract::We examine seven geographically separate subpopulations of Heliconius charithonia, a butterfly with well-documented home range behaviour, in Miami-Dade County, Florida, for genetic differentiation using cellulose acetate electrophoresis. These subpopulations exhibit little genetic variation (percent polymorphic loci =...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1046/j.1365-2540.2001.00830.x
更新日期:2001-02-01 00:00:00
abstract::A parallel study of the genetic structure of two oligophagous species associated with the same hosts was conducted to determine the main factors shaping the distribution of genetic diversity. The bark beetle Tomicus piniperda and the pine processionary moth (PPM) Thaumetopoea pityocampa are both associated with the ge...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/sj.hdy.6800836
更新日期:2006-07-01 00:00:00
abstract::The European bison (Bison bonasus) has recovered successfully after a severe bottleneck about 90 years ago but has been left with low genetic variability that may substantially hinder parentage and identity analysis. According to pedigree analysis, over 80% of the genes in the contemporary population descend from just...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/hdy.2009.73
更新日期:2009-10-01 00:00:00
abstract::Plant breeders are supported by a range of tools that assist them to make decisions about the conduct or design of plant breeding programs. Simulations are a strategic tool that enables the breeder to integrate the multiple components of a breeding program into a number of proposed scenarios that are compared by a ran...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/s41437-018-0156-0
更新日期:2019-05-01 00:00:00
abstract::Investigations into the genetic basis of reproductive barriers among recognized and putative varieties in Phacelia dubia have provided evidence that even among closely related taxa, multiple pathways can lead to reproductive isolation. A nuclear-based reproductive barrier, expressed as partial hybrid sterility of both...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/hdy.1991.97
更新日期:1991-12-01 00:00:00
abstract::Segregation distortion is the phenomenon whereby the observed genotypic frequencies of a locus fall outside the expected Mendelian segregation ratio, and it is increasingly recognised as a potentially powerful evolutionary force. The main reason for segregation distortion is a difference in the viability of gametes an...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/hdy.2012.89
更新日期:2013-04-01 00:00:00
abstract::Equilibrium sex ratios have been determined analytically under Wright's island model in order to determine the effect of population structure with limited dispersal. When mating occurs before dispersal, the dispersal rate has little or no effect, and the equilibrium sex ratio remains the same as under complete dispers...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/hdy.1986.10
更新日期:1986-02-01 00:00:00
abstract::Complete D-loop sequences of 20 Mus from three localities in Turkey and seven in Iran were characterized. These countries are thought to be close to the place of origin of the subspecies Mus musculus domesticus. Five new M. m. domesticus haplotypes were added to the nine already known for the region. Four of these 14 ...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1046/j.1365-2540.2000.00694.x
更新日期:2000-04-01 00:00:00
abstract::Phlebotomus ariasi is one of the two sandflies transmitting the causative agent of zoonotic leishmaniasis, Leishmania infantum, in France and Iberia, and provides a rare case study of the postglacial re-colonization of France by a Mediterranean species. Four DNA sequences were analysed-mitochondrial cytochrome b (cyt ...
journal_title:Heredity
pub_type: 历史文章,杂志文章
doi:10.1038/hdy.2010.111
更新日期:2011-05-01 00:00:00
abstract::Recent molecular genetic analyses of Drosophila melanogaster and mouse central nervous system (CNS) development revealed strikingly similar genetic patterning mechanisms in the formation of the insect and vertebrate brain. Thus, in both insects and vertebrates, the correct regionalization and neuronal identity of the ...
journal_title:Heredity
pub_type: 杂志文章,评审
doi:10.1038/sj.hdy.6800664
更新日期:2005-05-01 00:00:00
abstract::The field of ecological genomics seeks to understand the genetic mechanisms underlying responses of organisms to their natural environments. This is being achieved through the application of functional genomic approaches to identify and characterize genes with ecological and evolutionary relevance. By its very nature,...
journal_title:Heredity
pub_type: 杂志文章,评审
doi:10.1038/sj.hdy.6800992
更新日期:2008-02-01 00:00:00
abstract::A long-standing goal of evolutionary biology is to understand the factors that drive population divergence, local adaptation and speciation. In particular, the effect of selection against dispersers on gene flow and local adaptation has attracted interest, although empirical data on phenotypic characters of dispersers...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/hdy.2008.59
更新日期:2008-10-01 00:00:00
abstract::A population resulting from the diallel cross of a set of elite inbred lines was selected under two strategies: (i) inbred strategy (IS) under brother-sister mating; and (ii) random strategy (RIS) under random mating. The final lines in both cases were completely inbred. RIS populations clearly responded better than I...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1046/j.1365-2540.1999.00520.x
更新日期:1999-06-01 00:00:00
abstract::Differences in behaviour between individuals in populations living in different environments may result from evolution proceeding differently in each population. The parasitoid wasp Cotesia glomerata (L.) (Hymenoptera: Braconidae) parasitizes early instar larvae of butterflies in the family Pieridae. In the study area...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1046/j.1365-2540.1999.00549.x
更新日期:1999-08-01 00:00:00
abstract::The widespread and locally massive introgression of Y chromosomes of the eastern house mouse (Mus musculus musculus) into the range of the western subspecies (M. m. domesticus) in Central Europe calls for an explanation of its underlying mechanisms. Given the paternal inheritance pattern, obvious candidates for traits...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/s41437-020-0330-z
更新日期:2020-10-01 00:00:00
abstract::Understanding how geographical and environmental features affect genetic variation at both the population and individual levels is crucial in biology, especially in the case of pathogens. However, distinguishing between these factors and the effects of historical range expansion on spatial genetic structure remains ch...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/hdy.2012.55
更新日期:2013-01-01 00:00:00
abstract::Fluorescence in situ hybridization (FISH) was used to localize two transgenes (gus and bar), carried on plasmids pACT-1F and pUBA, respectively, on mitotic metaphase squashes of T1 plants of the cultivated hexaploid oat Avena sativa L. cotransformed by microprojectile bombardment of embryogenic callus. Among the eight...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1046/j.1365-2540.2000.00627.x
更新日期:2000-01-01 00:00:00
abstract::How does genetic diversity within populations of plants develop during primary succession on alpine glacier forelands? Theory predicts that pioneer populations are characterized by low genetic diversity due to founder effects and that genetic diversity increases within populations as they mature and recurrent gene flo...
journal_title:Heredity
pub_type: 杂志文章
doi:10.1038/hdy.2008.8
更新日期:2008-05-01 00:00:00