Colonization of the Americas by Drosophila subobscura: lethal-gene allelism and association with chromosomal arrangements.
Colonization of the Americas by Drosophila subobscura: lethal-gene allelism and association with chromosomal arrangements.
复制标题
亚暗果蝇在美洲的殖民:致死基因等位性和与染色体排列的关联。
DOI:
10.1093/genetics/140.4.1297
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发表时间:
1995
期刊:
影响因子:
3.3
通讯作者:
Ayala,FJ
中科院分区:
文献类型:
--
作者:
Mestres,F;Serra,L;Ayala,FJ
Drosophila subobscura is a Palearctic species that has recently colonized the Americas. It was first found in 1978 in Puerto Montt, Chile, and in 1982 in Port Townsend, WA. The colonization and rapid expansion of the species in western South and North America provides distinctive opportunities for investigating the process of evolution in action. The inversion polymorphism in the O chromosome from populations of central California and northern Washington, separated by 1300 km, corresponds to a previously observed latitudinal cline, also observed in Europe. Recessive lethal genes are not randomly distributed among the chromosomal arrangements. The incidence of lethal allelism is high, yielding unrealistically low estimates of the effective size of these populations (on the order of 1000 individuals). The high incidence of lethal allelism is likely to be a consequence of the low number of the American colonizers (on the order of 10-100 individuals), but the persistence of the allelism over several years suggests that some lethal-carrying chromosomes may be heterotic owing to shared associations between lethal and other genes.
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DOI:
--
发表时间:
1983
期刊:
Isozymes
影响因子:
--
作者:
A. Prevosti;M. Garcia;L. Serra;M. Aguadé;G. Ribó;E. Sagarra
通讯作者:
E. Sagarra
影响因子:
3.3
作者:
T. Prout
通讯作者:
T. Prout
影响因子:
1.4
作者:
A. Robertson;P. Narain
通讯作者:
P. Narain
DOI:
--
发表时间:
1961
期刊:
影响因子:
--
作者:
C. Epling;V. E. Tinderholt;R. Mattoni
通讯作者:
R. Mattoni
影响因子:
3.3
作者:
N. Dubinin
通讯作者:
N. Dubinin