LACK OF RESPONSE TO FAMILY SELECTION FOR DIRECTIONAL ASYMMETRY IN DROSOPHILA-MELANOGASTER - LEFT AND RIGHT ARE NOT DISTINGUISHED IN DEVELOPMENT

被引：46

作者：

TUINSTRA, EJ ^{[1
]}

DEJONG, G ^{[1
]}

SCHARLOO, W ^{[1
]}

机构：

[1] STATE UNIV UTRECHT, PADUALAAN 8, 3584 CH UTRECHT, NETHERLANDS

来源：

PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES | 1990年 / 241卷 / 1301期

关键词：

D O I：

10.1098/rspb.1990.0078

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Family selection for directional asymmetry in the expression of the Drosophila melanogaster mutant scute had no result. Fluctuating asymmetry did not show a selection differential correlated with directional asymmetry. The unfolding of bilateral symmetry in embryogenesis can be used to explain the lack of genetic variation for directional asymmetry. Directional asymmetry provides a well-understood example of a developmental constraint in evolution. It is proposed that as no evidence is available for an independent left-right gradient in the embryo, quantitative traits can only be expressed variably along an existing gradient of positional information or a morphogen.

引用

页码：146 / 152

页数：7

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