黑腹果蝇自然种群中的连锁不平衡 季节变化
Linkage disequilibrium in natural populations of Drosophila melanogaster Seasonal variation.
作者信息
Langley C H, Ito K, Voelker R A
出版信息
Genetics. 1977 Jun;86(2 Pt. 1):447-54.
Abstract
Linkage disequilibrium among ten polymorphic allozyme loci and polymorphic inversions on chromosomes 2 and 3 in a natural population of Drosophila melanogaster was examined early and late in the annual season. Similar to previous studies, little linkage disequilibrium was observed among allozymes. The two significant cases that were observed in the first sample behaved in a contradictory way. One declined much more rapidly than expected due simply to recombination; the other declined slowly as expected. There was littly change in allozyme or inversion frequencies during the season.
摘要
在果蝇自然种群中，于年度季节的早期和晚期对位于2号和3号染色体上的十个多态性等位酶基因座以及多态性倒位之间的连锁不平衡进行了检测。与先前的研究相似，在等位酶之间观察到的连锁不平衡很少。在第一个样本中观察到的两个显著案例表现出相互矛盾的情况。其中一个仅因重组而下降的速度比预期快得多；另一个则如预期那样缓慢下降。在这个季节中，等位酶或倒位频率几乎没有变化。
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