CLOVER TONGUE MANUALS

Innovation and Development Accelerator (IDA).Information & Communication Technology Services (ICT).Corporate Engagement & International Relations (CEIRD).Sam Nujoma Marine & Coastal Resources Research Centre.Quality Assurance and Management (CEQUAM).Centre for Innovation in Learning and Teaching (CILT).Grants Management and Resource Mobilization.Faculty of Health Sciences & Veterinary Medicine.School of Humanities, Society & Development.School of Business Management, Governance & Economics.School of Engineering & the Built Environment.School of Agriculture & Fisheries Sciences.Faculty of Agriculture, Engineering & Natural Sciences.Online Support for Distance Education/Part-time Studies.Distance/Part-time Postgraduate Programmes.Distance/Part-time Undergraduate Programmes.Distance Education/Part-time Requirements.Here, a few other examples McDonald says he's debunked. Tongue-rolling isn’t the only genetic trait we’ve oversimplified.

“If students took it seriously, a large proportion of students would look at mom and dad and conclude that the mom was sleeping around and dad wasn’t really their dad.”

CLOVER TONGUE MANUALS

“It is an embarrassment to the field of biology education that textbooks and lab manuals continue to perpetuate these myths,” he writes. But spreading these kinds of inaccuracies can be really dangerous.

So why has this rumor persisted? “It would be really nice to have a biology experiment you can do just by looking around the room,” McDonald says. In other cases, it could just come down to a developmental quirk, like your position in the womb, he says. nurture” in action-many people can break genetic bounds and teach themselves the sacred art of tongue rolling. McDonald says that in some cases, the environment plays a part. Yet I ask even today my students ‘how many of you have been told that tongue rolling is a simple genetic characteristic?’ and most raise their hands.” “That pretty clearly tells you it’s not all genetic. “By the early 1950s, people knew pairs of twins where one could roll and one couldn’t,” McDonald says. The genetic theory of tongue-rolling can be traced back to a 1940 study by a scientist called Alfred Sturtevant that was quickly debunked. “Yet people have looked at families and find you do see that.”Īccording to McDonald, teachers and textbooks have been over-simplifying this story for decades. “If that were true, you could never have two non-rolling parents that having a tongue-rolling kid,” he says. McDonald, a professor in the University of Delaware department of biological sciences, calls B.S. In other words, if you can’t do it, blame mom and dad.īut John H. The story goes that, if you inherited a dominant variation of the “tongue rolling gene” from one of your parents, you too will inherit this party trick. But why can some do it while others can’t? The most common answer, the one often taught in elementary schools and museums, is that it’s all about genetics. Between 65 and 81 percent of people on Earth have this strange and seemingly arbitrary talent. Can you roll your tongue? If so, you’re part of the majority.

Clover tongue