Results 201 to 210 of about 5,225 (221)
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On the principle underlying the tabular method to compute coancestry
Theoretical and Applied Genetics, 1991The tabular method to compute coancestry between two individuals is based on the principle that coancestry may be computed as the average coancestry between one individual and the parents of the other, on the condition that the former individual is not a direct descendent of the latter.
H L, Chang, R L, Fernando, M, Grossman
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Inbreeding, Coancestry, and Covariance between Relatives for X-Chromosomal Loci
Journal of Heredity, 1989Knowledge about the relationships between relatives for X-chromosomal loci is necessary to compute genetic variances and covariances for the genetic evaluation of individuals for economically important traits in livestock and poultry. Using a unified approach, we derived explicitly the coefficient of inbreeding for individuals and the coefficient of ...
M, Grossman, E J, Eisen
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1987
We can now evaluate the coancestry between specific relatives. Consider first the coancestry between an individual and one of its offspring, f(PO). If A and B are the parents of C, fAC is an example of a parent-offspring coancestry coefficient. From Eq. (25.5), $${f_{AC}} = \left( {1/2} \right)\left( {{f_{AA}} + {f_{AB}}} \right).$$
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We can now evaluate the coancestry between specific relatives. Consider first the coancestry between an individual and one of its offspring, f(PO). If A and B are the parents of C, fAC is an example of a parent-offspring coancestry coefficient. From Eq. (25.5), $${f_{AC}} = \left( {1/2} \right)\left( {{f_{AA}} + {f_{AB}}} \right).$$
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Estimating coancestry from genotypes using a linear regression method
Forensic Science International: Genetics Supplement Series, 2011Abstract The estimation of the coancestry coefficient associated with a pair of individuals, given their genetic types, has been a matter of great theoretical and practical importance, namely in forensic kinship tests. Generally considered as a condensed measure of relatedness, it is quite often assumed that there is a loss of information when this ...
N. Pinto +3 more
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Estimation of coefficient of coancestry using molecular markers in maize
Theoretical and Applied Genetics, 1993The coefficient of coancestry (fAB) between individuals A and B is the classical measure of genetic relationship. fAB is determined from pedigree records and is the probability that random alleles at the same locus in A and B are copies of the same ancestral allele or identical by descent (ibd).
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Tabular Calculation of Coancestry
1987If L is the offspring of J × K, and if we know the coancestries of A and B with J and K, we can calculate the coancestries of A and B with L, using the first averaging rule, Eq. (25.5). These calculations lend themselves readily to a tabular format: $$\begin{gathered} \,\,\,\,\,\,\,\,\,\,\,\,\,J\,\,\,\,\,\,\,\,\,\,\,K\,\,\,\,\,\,\,\,\,\,\,L \hfill \
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Marker-based estimation of the coefficient of coancestry in hybrid breeding programmes
Theoretical and Applied Genetics, 2009Molecular markers allow to estimate the pairwise relatedness between the members of a breeding pool when their selection history is no longer available or has become too complex for a classical pedigree analysis. The field of population genetics has several estimation procedures at its disposal, but when the genotyped individuals are highly selected ...
S, Maenhout, B, De Baets, G, Haesaert
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Group coancestry-controlled selection in a Pinus sylvestris L. breeding program
Theoretical and Applied Genetics, 1999Integer Linear Programming was used to maximize genetic gain from selection at a given level of relatedness. Variances and breeding values for total height were available for 296 plus-trees of Pinus sylvestris which had been evaluated by open-pollinated progeny testing at a single test site in northern Sweden.
Andersson, E. W. +2 more
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Theoretical and Applied Genetics, 2004
Knowledge of the genetic diversity of a species is important for the choice of crossing parents in line and hybrid breeding. Our objective was to investigate European winter triticale using simple sequence repeat (SSR) markers and the coancestry coefficient ( f) with regard to genetic diversity and grouping of germplasm.
S H, Tams +3 more
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Knowledge of the genetic diversity of a species is important for the choice of crossing parents in line and hybrid breeding. Our objective was to investigate European winter triticale using simple sequence repeat (SSR) markers and the coancestry coefficient ( f) with regard to genetic diversity and grouping of germplasm.
S H, Tams +3 more
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230. Inbreeding and coancestry trends in Nordic Holstein
Proceedings of 12th World Congress on Genetics Applied to Livestock Production (WCGALP), 2022S. Tenhunen +5 more
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