Milk Tolerance Gene

March 2007
Science & Children;Mar2007, Vol. 44 Issue 7, p8
Academic Journal
The article informs on the discovery of genetic mutations in East Africans that are associated with the ability to digest milk like adults by an international team of scientists led by Sarah Tishkoff, a researcher in the University of Maryland, Baltimore. A study of DNA revealed that the mutations evolved at the time in history when some Africans were beginning to raise cattle. The findings reveal a striking genetic footprints of natural selection ever observed in humans. While, the researchers think that human adults cannot digest milk, it takes a genetic mutation to enable humans to tolerate lactose. The research of Tishkoff solved the mystery of why some African people who raise cattle and successfully digest milk do not have the mutation that allows Europeans to digest milk.


Related Articles

  • Milk tolerance.  // Journal of College Science Teaching;Mar/Apr2007, Vol. 36 Issue 5, p8 

    This article discusses findings of a study which identified genetic mutations in East Africans that are associated with the ability of adults to digest milk. According to lead researcher Sarah Tishkoff of the University of Maryland, the findings of this study described the co-evolution of genes...

  • Genomics: Hunter-gatherer genes.  // Nature;Jul2012, Vol. 488 Issue 7409, p8 

    The article reports on genetic research by Sarah Tishkoff at the University of Pennsylvania in Philadelphia and her colleagues showing 13.4 million variants of the three African populations which are Cameroonian Pgmies, the Hadza, and Sandawe people.

  • Human evolution: How Africa learned to love the cow. Check, Erika // Nature;12/21/2006, Vol. 444 Issue 7122, p994 

    The article reports the development of lactose tolerance in sub Saharan Africa due to genetic convergence. The article briefs the reasons for lactose intolerance in humans, while making a special mention of a study conducted in Africa by Sarah Tishkoff of University of Maryland. The article...

  • Gene Mutation for Milk Tolerance.  // Science Teacher;Mar2007, Vol. 74 Issue 3, p12 

    The article reports on a University of Maryland research team, led by scientist Sarah Tishkoff, that studied deoxyribonucleic acid (DNA) of East Africans. Human bodies are not designed to digest milk, and some humans tolerate milk products because of a genetic mutation. Tishkoff's team...

  • SARAH TISHKOFF. Goldman, Laurie // Popular Science;Sep2003, Vol. 263 Issue 3, p93 

    The article focuses on molecular anthropologist Sarah Tishkoff. Tishkoff realized how far she'd strayed from the scientific mainstream when she found herself processing blood samples in a centrifuge she'd hooked to the battery of her dusty Land Rover automobile near a village in the Ngorongoro...

  • Follow the Drinking Gourd. DUNN, ROB // Natural History;May2011, Vol. 119 Issue 5, p10 

    The article discusses lactose intolerance and examines research that has been conducted on the historical and genetic underpinnings of this condition. While it was once assumed that most people were able to digest milk, studies have progressively shown that an intolerance for the liquid may date...

  • DGAT1 and ABCG2 polymorphism in Indian cattle (Bos indicus) and buffalo (Bubalus bubalis) breeds. Tantia, Madhu S.; Vijh, Ramesh K.; Mishra, Bishnu P.; Mishra, Bina; Kumar, S. T. Bharani; Sodhi, Monika // BMC Veterinary Research;2006, Vol. 2, p1 

    Background: Indian cattle (Bos indicus) and riverine buffalo (Bubalus bubalis) give a poor yield of milk but it has a high fat and protein percentage compared to taurine cattle. The identification of QTLs (Quantitative Trait Loci) on BTA14 and BTA6 and its subsequent fine mapping has led to...

  • Diversity: Of beans and genes. Eisenstein, Michael // Nature;12/23/2010 Supplement, Vol. 468 Issue 7327, pS13 

    The article presents studies regarding the genetic aspects of preferred foods human digestion. It mentions the efforts of evolutionary biologist Nathaniel Dominy and his colleagues in determining the link between genetic mutations and the food selection. Geneticist Dallas Swallow explains the...

  • Association of bovine DGAT1 and leptin genes polymorphism with milk production traits and energy balance indicators in primiparous Holstein cows. Kadlecová, Veronika; Nĕmĕcková, Dana; Ječmínková, Kateřina; Stádník, Ludĕk // Mljekarstvo / Dairy;2014, Vol. 64 Issue 1, p19 

    This study investigated the impact and significance of two polymorphisms located in the DGAT1 and LEP genes on selected milk production traits during the first six months of lactation, with respect to the course of the Holstein primiparous cows' body condition. A total of 278 primiparous...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics