Further Readings
- Burtis, K. C. Doublesex in the Middle. Science August 1, 2003. The doublesex (dsx) gene acts in the middle of a complex web of regulation that ultimately determines sexual identity in the fruit fly Drosophila melanogaster.
- Chess, A. Expansion of the Allelic Exclusion Principle? Science March 27, 1998. In addition to imprinted genes and genes on X chromosomes, there are other kinds of mammalian genes for which only one allele is expressed.
- Crow, J. F. There's Something Curious About Paternal-Age Effects. Science August 1, 2003. This article discusses evidence for disease conditions that are associated with advanced paternal age.
- Jegalian, K., and B. T. Lahn. Why the Y Is So Weird. Scientific American February 2001. How did the human Y chromosome come to be so unlike its partner, the X chromosome? This article discusses the evolutionary history of the sex chromosomes.
- Mestel, R. The Genetic Battle of the Sexes. Natural History February 1998. Provides a possible evolutionary explanation for genomic imprinting.
- Percec, I., and M. S. Bartolomei. Do X Chromosomes Set Boundaries? Science January 11, 2002. The authors discuss current research relating to the interesting process of X chromosome inactivation.
- Skaletsky, H., et al. (40 authors total!). The Male-Specific Region of the Human Y Chromosome Is a Mosaic of Discrete Sequence Classes. Nature June 19, 2003. This article reports the sequence of 95% of the chromosome, corresponding to the male-specific region (MSY) that differentiates the sexes.
- Thorvaldsen, J. L., and M. S. Bartolomei. Mothers Setting Boundaries. Science June 23, 2000. Recent information about the molecular mechanisms of genomic imprinting in mammals.
- Wallace, D. C. Mitochondrial DNA in Aging and Disease. Scientific American August 1997. Although mitochondria carry only a tiny amount of DNA, mutations of this DNA can have far-reaching effects.





