You are not currently logged in.
Access your personal account or get JSTOR access through your library or other institution:
If You Use a Screen ReaderThis content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
The Effect of Differential Viability on the Population Dynamics of t Alleles in the House Mouse
R. C. Lewontin
Vol. 22, No. 2 (Jun., 1968), pp. 262-273
Published by: Society for the Study of Evolution
Stable URL: http://www.jstor.org/stable/2406525
Page Count: 12
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Preview not available
Recent findings show that so-called "viable," male-sterile t alleles in Mus musculus populations in fact cause loss of viability in homozygotes of between 45% and 90%. The effect of this loss of viability on the population dynamics of these alleles has been analyzed using both a deterministic and stochastic model. Comparing the results with those obtained by Lewontin and Dunn (1960) for lethal alleles and by Lewontin (1962) for completely viable male-steriles, it is found that unless the loss of viability is extreme, viable t alleles can be treated as completely viable. The rates of fixation of + alleles, the rates of extinction of households, and the conditional distribution of unfixed populations all resemble those for completely viable alleles unless the loss of viability is of the order of 90%.
Evolution © 1968 Society for the Study of Evolution