A new test for detecting ongoing selection
| العنوان: | A new test for detecting ongoing selection |
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| المؤلفون: | Yutaka Inoue, Miki Ohshima, Toshiyuki Takano-Shimizu, Rumi Kondo, Masanobu Itoh, Nobuyuki Inomata |
| المصدر: | Genetica. 133:321-334 |
| بيانات النشر: | Springer Science and Business Media LLC, 2007. |
| سنة النشر: | 2007 |
| مصطلحات موضوعية: | Male, Population, Population genetics, Plant Science, Biology, Chromosomes, Gene Frequency, Genetics, Animals, Inbreeding, Selection, Genetic, education, Allele frequency, Selection (genetic algorithm), Probability, Chromosomal inversion, education.field_of_study, Natural selection, Haplotype, General Medicine, Drosophila melanogaster, Genetic Techniques, Haplotypes, Insect Science, Chromosome Inversion, Female, Animal Science and Zoology |
| الوصف: | Much effort has been made to search for signatures of past natural selection in DNA sequences. However, currently acting selection is rarely detected in natural populations because of its rarity, low detection power of available methods, or both. Here, we develop a new test to detect viability selection over a single generation. In this test, one specific type of chromosomes is chosen as a reference, while all other chromosomes are designated as "focal". The test compares measures of variation between two groups of "focal" chromosomes: those found in reference/focal heterozygous individuals and those found in focal/focal homozygous individuals. In the absence of selection, we do not expect differences between these two groups as long as mating is random. On the other hand, currently acting selection can cause differences in some measures of variation. We applied this test to typing data for In(2L)t inversion polymorphism in a Drosophila melanogaster population, using "standard" (non-inverted) chromosomes as the focal class. Although the frequencies of In(2L)t and standard chromosomes did not deviate from the Hardy-Weinberg equilibrium, we found differences in allele frequency and the number of haplotypes between the two groups of standard chromosomes. This new test, in conjunction with the Hardy-Weinberg test, may shed light on how often strong selection is operating in extant populations. |
| تدمد: | 1573-6857 0016-6707 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8611eccee7b8e01fdaa07f3cdd95beb6 https://doi.org/10.1007/s10709-007-9216-8 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....8611eccee7b8e01fdaa07f3cdd95beb6 |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 15736857 00166707 |
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