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ARE ENZYME LOCI SELECTIVELY NEUTRAL IN HAPLOID POPULATIONS OF NONVASCULAR PLANTS?
Author(s) -
Stenøien Hans Kristen
Publication year - 1999
Publication title -
evolution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.84
H-Index - 199
eISSN - 1558-5646
pISSN - 0014-3820
DOI - 10.1111/j.1558-5646.1999.tb04520.x
Subject(s) - biology , neutrality , ploidy , population , ecology , genetics , demography , philosophy , epistemology , sociology , gene
Enzyme data from 12 previously published studies of haploid bryophyte populations were subjected to tests of selective neutrality and population equilibrium. Altogether 280 samples were tested using the Ewens‐Watterson test, the Ewens exact test, and Chakraborty's test. The Ewens‐Watterson and the Ewens exact tests revealed neutrality in 84.6% of the cases, whereas the Chakraborty test revealed neutrality in 100% of the cases. Neutrality may thus explain the relatively high amounts of genetic variation found in these organisms. Possible hidden population sub‐structuring and nonrandom field sampling of genotypes in many of the studies could make Chakraborty's test more reliable than the two others.