-
- IMAI Hirotami T.
- National Institute of Genetics
-
- TAYLOR Robert. W.
- Division of Entomology, CSIRO
-
- CROZIER Rossiter H.
- Dept. of Genetics and Human Variation, Latrobe University
書誌事項
- タイトル別名
-
- Experimental bases for the minimum interaction theory. I. Chromosome evolution in ants of the Myrmecia pilosula species complex (Hymenoptera: Formicidae: Myrmeciinae).
- サイショウ サヨウセツ ニ タイスル ジッケンテキ ウラズケ 1 トビキバハリ
この論文をさがす
抄録
Chromosome evolution in primitive Australian ants of the Myrmecia pilosula species complex is investigated in the context of the minimum interaction theory. Under the minimum interaction theory, selection favors rearrangements tending to reduce the occurrence of deleterious chromosomal mutations, and hence chromosome numbers are expected to increase. The complex is chromosomally highly heterogeneous (2n = 2-32), and comprises at least 5 karyotypically distinct species: M. croslandi (2n=2-4), M. imaii (2n=6-8), M. banksi (2n=9-10), M. haskinsorum (2n=12-24), and M. pilosula (2n=18-32). Statistical considerations using the karyograph method and chromosomal alteration network analysis indicate that chromosome evolution of the complex proceeds as a whole towards increase in chromosome number by centric fission and, inversions converting chromosomes from aero- to metacentrics (A-M-inversion). These conclusions are consistent with the predictions of the minimum interaction theory. Both centric fusion and A-M-inversion serve to eliminate constitutive heterochromatin (visible as C-bands), which appears to increase in a saltatory fashion after centric fission, probably due to telomere instability. Newly observed phenomena which we term "fusion burst" and "fission burst" suggest that rates of chromosome evolution in M. pilosula have fluctuated with time.<br>
収録刊行物
-
- 遺伝学雑誌
-
遺伝学雑誌 69 (2), 137-182, 1994
日本遺伝学会
- Tweet
キーワード
詳細情報 詳細情報について
-
- CRID
- 1390282680422606080
-
- NII論文ID
- 10006701499
- 30018517863
-
- NII書誌ID
- AA00690924
-
- ISSN
- 18805787
- 0021504X
- http://id.crossref.org/issn/0021504X
-
- NDL書誌ID
- 3882498
-
- 本文言語コード
- en
-
- データソース種別
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- 抄録ライセンスフラグ
- 使用不可