Malik Lab researchers find heterochromatin helps explain speciation
Nov. 2, 2009
New research into this field by Fred Hutchinson Cancer Research Center Basic Sciences Division researchers, published online Oct. 22 in Science Express, suggests that the explanation for why crosses between two species often yeild sterile or inviable progeny lies within the “dark matter" of the genome: heterochromatin, a tightly packed, gene-poor compartment of DNA found within the genomes of all nucleated cells.
Findings by Peichel and colleagues lay the groundwork for long-term goal of identifying genes that contribute to behavioral differences in natural populations
Sept. 28, 2009
The Fred Hutchinson Cancer Research Center Human Biology Division’s Drs. Katie Peichel and Jun Kitano, along with Joe Ross, a former graduate student in the Molecular and Cellular Biology program, and colleagues identified a new sex-chromosome system that is found in only one of two species of threespine stickleback fish that exist in the same habitat in the Sea of Japan. The findings, published this week in the journal Nature, suggest that sex-chromosome changes may have a far greater role in speciation than was previously anticipated.
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