COLORADO SPRINGS — Biology textbooks used in American high schools do not go near the sensitive question of whether genetics can explain why African-Americans are overrepresented as football players and why a disproportionate number of American scientists are white or Asian.
But in a study starting this month, a group of biology teachers from across the country will address it head-on. They are testing the idea that the science classroom may be the best place to provide a buffer against the unfounded genetic rationales for human difference that often become the basis for racial intolerance.
At a recent training in Colorado, the dozen teachers who had volunteered to participate in the experiment acknowledged the challenges of inserting the combustible topic of race and ancestry into straightforward lessons on the 19th-century pea-breeding experiments of Gregor Mendel and the basic function of the strands of DNA coiled in every cell.
The new approach represents a major deviation from the usual school genetics fare, which devotes little time to the extent of genetic differences across human populations, or how traits in every species are shaped by a complex mix of genes and environment.
It also challenges a prevailing belief among science educators that questions about race are best left to their counterparts in social studies.
The history of today’s racial categories arose long before the field of genetics and have been used to justify all manner of discriminatory policies. Race, a social concept bound up in culture and family, is not a topic of study in modern human population genetics, which typically uses concepts like “ancestry” or “population” to describe geographic genetic groupings.
But that has not stopped many Americans from believing that genes cause racial groups to have distinct skills, traits and abilities. And among some biology teachers, there has been a growing sense that avoiding any direct mention of race in their genetics curriculum may be backfiring.
“I know it’s threatening,” said Brian Donovan, a science education researcher at the nonprofit BSCS Science Learning who is leading the study. “The thing to remember is that kids are already making sense of race and biology, but with no guidance.”
Human population geneticists have long emphasized that racial disparities found in society do not in themselves indicate corresponding genetic differences. A recent paper by leading researchers in the field invokes statistical models to argue that health disparities between black and white Americans are more readily explained by environmental effects such as racism than the DNA they inherited from ancestors... (continues)
No comments:
Post a Comment