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Originally published as Genetics Published Articles Ahead of Print on May 15, 2006.
Genetics, Vol. 173, 1817-1821, July 2006, Copyright © 2006
doi:10.1534/genetics.105.054684
Parent-of-Origin Effects on mRNA Expression in Drosophila melanogaster Not Caused by Genomic Imprinting
Patricia J. Wittkopp1, Belinda K. Haerum2 and Andrew G. Clark
Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York 14853
1 Corresponding author: 1061 Natural Science Bldg., 830 N. University Ave., University of Michigan, Ann Arbor, MI 48109-1048.
E-mail: wittkopp{at}umich.edu
Parent-of-origin effects create differences in gene expression among genetically identical individuals. Using measurements of allele-specific expression, we demonstrate that previously reported parent-of-origin effects on standing mRNA levels in Drosophila melanogaster are not attributable to genomic imprinting. Offspring from reciprocal crosses exhibit differences in total expression without differences in allelic expression, indicating that other types of maternal and/or paternal effects alter expression.
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