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Two-locus inbreeding measures for recurrent selection (1977)

Choy, S. C. ; Weir, B. S.

Springer

Theoretical and applied genetics 49 (1977), S. 63-77

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ISSN: 1432-2242

Source: Springer Online Journal Archives 1860-2000

Topics: Biology

Notes: Summary For a population undergoing recurrent selection, a method is presented for determining the average inbreeding coefficients at the end of each breeding cycle. The coefficients are derived in terms of probability measures that genes are identical by descent. For the one-locus case, two digametic measures are defined and employed in the derivation of a recurrence formula for the inbreeding coefficient. Two further classes of measures, trigametic and quadrigametic, are required for transition from one cycle to the previous one to allow the calculation of the inbreeding function for the two-locus case. Numerical values of the average probability of double identity by descent for populations with various imposed assumptions are listed to illustrate the effects of linkage and population size on the accrual of inbreeding and hence of homozygosity.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00275165

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Gamma-Ray Spectra Analysed by Computer Programme Using the Peak Area Method (1965)

CHOY, S. C. ; SCHMITT, R. A.

[s.l.] : Nature Publishing Group

Nature 205 (1965), S. 758-760

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ISSN: 1476-4687

Source: Nature Archives 1869 - 2009

Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics

Notes: [Auszug] AFTER considerable time had been devoted to manual analyses of more than 500 gamma-ray spectra, a computer programme was formulated, and it is now used routinely in the instrumental neutron activation analysis of meteorites1. In particular, our present research problem involves the determination, ...