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Genetic Load and the Mating System in Homosporous Ferns
Philip W. Hedrick
Vol. 41, No. 6 (Nov., 1987), pp. 1282-1289
Published by: Society for the Study of Evolution
Stable URL: http://www.jstor.org/stable/2409093
Page Count: 8
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The mutational genetic load was calculated assuming mutation-selection-inbreeding equilibrium and applied to homosporous ferns. Diploid species with past inbreeding should have a low genetic load while outcrossers should have a high genetic load. These predictions are consistent with the bimodal pattern of genetic load found in 18 diploid homosporous fern species. The prediction that tetraploids should have a low genetic load is also consistent with estimates of genetic load in several species.
Evolution © 1987 Society for the Study of Evolution