Haldane's sieve and adaptation from the standing genetic variation.
Haldane's sieve and adaptation from the standing genetic variation.
复制标题
霍尔丹筛法和对常设遗传变异的适应。
DOI:
10.1093/genetics/157.2.875
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发表时间:
2001
期刊:
影响因子:
3.3
通讯作者:
Betancourt,AJ
中科院分区:
文献类型:
--
作者:
Orr,HA;Betancourt,AJ
We consider populations that adapt to a sudden environmental change by fixing alleles found at mutation-selection balance. In particular, we calculate probabilities of fixation for previously deleterious alleles, ignoring the input of new mutations. We find that “Haldane's sieve”—the bias against the establishment of recessive beneficial mutations—does not hold under these conditions. Instead probabilities of fixation are generallyindependentof dominance. We show that this result is robust to patterns of sex expression for bothX-linked and autosomal loci. We further show that adaptive evolution is invariably slower atX-linked than autosomal loci when evolution begins from mutation-selection balance. This result differs from that obtained when adaptation uses new mutations, a finding that may have some bearing on recent attempts to distinguish between hitchhiking and background selection by contrasting the molecular population genetics ofX-linkedvs.autosomal loci. Last, we suggest a test to determine whether adaptation used new mutations or previously deleterious alleles from the standing genetic variation.
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DOI:
--
发表时间:
1976
期刊:
影响因子:
--
作者:
J. Turner
通讯作者:
J. Turner
DOI:
--
发表时间:
1981
期刊:
影响因子:
--
作者:
J. Turner
通讯作者:
J. Turner
DOI:
--
发表时间:
1994
期刊:
影响因子:
--
作者:
C. Aquadro;D. Begun;Eric C. Kindahl
通讯作者:
Eric C. Kindahl
DOI:
--
发表时间:
1977
期刊:
影响因子:
--
作者:
Turner J.R.G.
通讯作者:
Turner J.R.G.
影响因子:
3.8
作者:
J. James
通讯作者:
J. James