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Positive correlation between recombination rates and levels of genetic variation in natural populations of sea beet (Beta vulgaris subsp. maritima)
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1998 (English)In: Genetics, ISSN 0016-6731, E-ISSN 1943-2631, Vol. 150, no 3, 1239-1244 p.Article in journal (Refereed) Published
Abstract [en]

The relation between the level of genetic variation and the rate of recombination per physical unit was investigated in sea beet (Beta vulgaris subsp. maritima). The rate of recombination per physical unit was estimated indirectly through marker density in an RFLP linkage map of sugar beet. From this map, we also selected RFLP markers covering two of the nine chromosomes in Beta. The markers were used to estimate the level of genetic variation in three populations of sea beet, two from Italy and one from England. Two estimates of genetic variation were employed, one based on the number of alleles in the sample and the other on heterozygosity. A statistically significant positive correlation was found between recombination rate and genetic variation. Several theoretical explanations for this are discussed, background selection being one. A correlation similar to this has been observed previously in Drosophila, one that was higher than what we obtained for Beta. This is consistent with various biological differences between the two species.

Place, publisher, year, edition, pages
1998. Vol. 150, no 3, 1239-1244 p.
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Biological Sciences
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URN: urn:nbn:se:hkr:diva-8188PubMedID: 9799275OAI: oai:DiVA.org:hkr-8188DiVA: diva2:424491
Available from: 2011-06-17 Created: 2011-06-17 Last updated: 2014-06-10Bibliographically approved

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