Results 21 to 30 of about 224 (122)

On the estimation of inbreeding depression using different measures of inbreeding from molecular markers

open access: yesEvolutionary Applications, 2021
The inbreeding coefficient (F) of individuals can be estimated from molecular marker data, such as SNPs, using measures of homozygosity of individual markers or runs of homozygosity (ROH) across the genome.
Armando Caballero   +2 more
doaj   +1 more source

Population structure of the Trakehner Horse breed

open access: yesAnimal, 2009
The objective of this study was to examine the population structure of the Trakehner Horse breed. A total of 13 793 pedigree records were used for analysing the active breeding population and their ancestors dating back to 1950.
R. Teegen, C. Edel, G. Thaller
doaj   +1 more source

Inbreeding, effective population size, and coancestry in the Latxa dairy sheep breed [PDF]

open access: yesJournal of Dairy Science, 2020
Traditionally, breeding programs have estimated and managed inbreeding based on pedigree information. The availability of genomic marker panels has made possible new alternatives to achieve more precise estimates, for example in case of missing pedigree.
I. Granado-Tajada   +3 more
openaire   +4 more sources

ESTIMATION OF THE COANCESTRY COEFFICIENT: BASIS FOR A SHORT-TERM GENETIC DISTANCE [PDF]

open access: yesGenetics, 1983
ABSTRACT A distance measure for populations diverging by drift only is based on the coancestry coefficient θ, and three estimators of the distance D = -ln(1 - θ) are constructed for multiallelic, multilocus data. Simulations of a monoecious population mating at random showed that a weighted ratio of single-locus estimators performed ...
J, Reynolds, B S, Weir, C C, Cockerham
openaire   +2 more sources

Sistema de reprodução em populações de Eschweilera ovata (Cambess.) Miers Mating system in Eschweilera ovata (Cambess.) Miers populations

open access: yesRevista Árvore, 2006
O sistema de reprodução de duas populações de Eschweilera ovata foi quantificado por análise de isoenzimas em estrutura de progênies usando os modelos misto de reprodução e cruzamentos correlacionados.
Eduardo Gusson   +2 more
doaj   +1 more source

AllCoPol: inferring allele co-ancestry in polyploids

open access: yesBMC Bioinformatics, 2020
Background Inferring phylogenetic relationships of polyploid species and their diploid ancestors (leading to reticulate phylogenies in the case of an allopolyploid origin) based on multi-locus sequence data is complicated by the unknown assignment of ...
Ulrich Lautenschlager   +2 more
doaj   +1 more source

Sustainable long-term conservation of rare cattle breeds using rotational AI sires

open access: yesGenetics Selection Evolution, 2008
The development of inbreeding in rotation breeding schemes, sequentially using artificial insemination (AI) sires over generations, was investigated for a full AI scheme. Asymptotic prediction formulae of inbreeding coefficients were established when the
Avon Laurent, Colleau Jean-Jacques
doaj   +1 more source

Applying SNP-Derived Molecular Coancestry Estimates to Captive Breeding Programs [PDF]

open access: yesJournal of Heredity, 2016
Captive breeding programs for wildlife species typically rely on pedigrees to inform genetic management. Although pedigree-based breeding strategies are quite effective at retaining long-term genetic variation, management of zoo-based breeding programs continues to be hampered when pedigrees are poorly known. The objective of this study was to evaluate
Jamie A, Ivy   +4 more
openaire   +2 more sources

Reduction of inbreeding in commercial females by rotational mating with several sire lines

open access: yesGenetics Selection Evolution, 2004
A mating system to reduce the inbreeding of commercial females in the lower level was examined theoretically, assuming a hierarchical breed structure, in which favorable genes are accumulated in the upper level by artificial selection and the achieved ...
Mukai Fumio   +2 more
doaj   +1 more source

Budding speciation, mitochondrial capture and introgression between surface and cave lineages in the Asellus aquaticus species complex

open access: yesCladistics, EarlyView.
Abstract Replicated pairs of ancestral and evolutionarily derived populations provide opportunities to test hypotheses about the deterministic laws of evolution. The Asellus aquaticus species complex is an invertebrate model system with several independent surface‐to‐cave transitions and a complicated and unresolved evolutionary history.
Peter Trontelj   +3 more
wiley   +1 more source

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