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The fixation of metacentric chromosomes during the chromosomal evolution in the common shrew (Sorex araneus, Insectivora)

The fixation of metacentric chromosomes during the chromosomal evolution in the common shrew (Sorex araneus, Insectivora)
The fixation of metacentric chromosomes during the chromosomal evolution in the common shrew (Sorex araneus, Insectivora)
Rb fusions between acrocentric chromosomes leading to metacentrics tend to become fixed during the chromosomal evolution in the common shrew. Using microsatellite markers preliminary results show that populations are only slightly subdivided and genetic drift seems not to play an important role for the fixation of metacentrics. A significant segregation distortion in favour of metacentric chromosomes was found during male meiosis. This suggests that cytological factors such as facilitated fusion between acrocentric chromosomes or choice-effects at the level of gametes are more likely to play a role for the chromosomal evolution in the common shrew.
0018-0661
209-217
Wyttenbach, A.
69846a0f-fb60-4a28-84eb-ed865a5e31fa
Hausser, J.
cae1af5b-b53f-45e7-ab72-61870e0c7033
Wyttenbach, A.
69846a0f-fb60-4a28-84eb-ed865a5e31fa
Hausser, J.
cae1af5b-b53f-45e7-ab72-61870e0c7033

Wyttenbach, A. and Hausser, J. (1996) The fixation of metacentric chromosomes during the chromosomal evolution in the common shrew (Sorex araneus, Insectivora). Hereditas, 125 (2-3), 209-217. (doi:10.1111/j.1601-5223.1996.00209.x).

Record type: Article

Abstract

Rb fusions between acrocentric chromosomes leading to metacentrics tend to become fixed during the chromosomal evolution in the common shrew. Using microsatellite markers preliminary results show that populations are only slightly subdivided and genetic drift seems not to play an important role for the fixation of metacentrics. A significant segregation distortion in favour of metacentric chromosomes was found during male meiosis. This suggests that cytological factors such as facilitated fusion between acrocentric chromosomes or choice-effects at the level of gametes are more likely to play a role for the chromosomal evolution in the common shrew.

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Published date: 1 January 1996

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Local EPrints ID: 56479
URI: http://eprints.soton.ac.uk/id/eprint/56479
ISSN: 0018-0661
PURE UUID: db024d31-c517-4fa9-9c0d-983ff9649661

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Date deposited: 22 Aug 2008
Last modified: 15 Mar 2024 11:01

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Author: A. Wyttenbach
Author: J. Hausser

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