RELATIONSHIPS WITHIN MELANOGASTER SPECIES SUBGROUP OF GENUS DROSOPHILA (SOPHOPHORA) .2. PHYLOGENETIC RELATIONSHIPS BETWEEN 6 SPECIES BASED UPON POLYTENE CHROMOSOME-BANDING SEQUENCES
RELATIONSHIPS WITHIN MELANOGASTER SPECIES SUBGROUP OF GENUS DROSOPHILA (SOPHOPHORA) .2. PHYLOGENETIC RELATIONSHIPS BETWEEN 6 SPECIES BASED UPON POLYTENE CHROMOSOME-BANDING SEQUENCES
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DOI：
10.1098/rspb.1976.0046
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发表时间：
1976-01-01
期刊：
影响因子：
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通讯作者：
ASHBURNER, M
中科院分区：
文献类型：
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作者：
LEMEUNIER, F;ASHBURNER, M
果蝇的黑腹种亚组包括6个兄弟种。通过对这些种的多线染色体带型的分析，研究了它们之间的亲缘关系。该种可分为两组：（1）黑腹，simulansandmauritiana和（2）直立，teissieriandyakuba。前一组在染色体上密切相关，实际上simulans和mauritiana是同源序列的。后一组（所有非洲特有种）是不太密切相关，虽然他们都共享8个常染色体倒位的标准（即。黑腹果蝇）序列。从这个共享的序列的三个非洲特有种的染色体有很大的分歧，许多近着丝粒倒位。都是D。teissieriandD. Yakuba是多态的，我们分别描述了9个和4个倒位序列。虽然我们的样本量很小（只有两个种群），但直立人是单态的。我们讨论了种间倒位的起源，特别是倒位断点重合的问题，以及本研究在这组物种内的进化关系。
Themelanogasterspecies subgroup ofDrosophilacomprises six sibling species. The interrelationship between these species has been studied by analysis of the banding patterns of their polytene chromosomes. The species fall into two groups: (1)melanogaster, simulansandmauritianaand (2)erecta, teissieriandyakuba. The former group are chromosomally closely related, indeedsimulansandmauritianaare homosequential. The latter group (all African endemic species) are less closely related although they all share eight autosomal inversions of the standard (i. e.melanogaster) sequence. From this shared sequence the chromosomes of the three African endemic species have diverged considerably by many paracentric inversions. BothD. teissieriandD. yakubaare polymorphic; we describe nine and four inversion sequences in them respectively.D. erectais monomorphic although our sample size is very small (only two populations). We discuss both the origin of interspecific inversions, especially the problem of inversion breakpoint coincidence, and the light this study throws upon evolutionary relationships within this group of species.