What also follows from that is that, if you want to identify a treatment for a genetic mutation such as Down syndrome, you may not have to go to its source, that extra chromosome 21: You could seek to alter gene expression almost anywhere else in the genome, since that is how far-flung the effects of that mutation are. Down syndrome is a genetic disorder caused when abnormal cell division results in an extra full or partial copy of chromosome 21. And if they’re not random, they can (someday) be understood. Thousands of new, high-quality pictures added every day. If they are organized functionally, they’re not random. Find Down Syndrome Poster stock images in HD and millions of other royalty-free stock photos, illustrations and vectors in the Shutterstock collection. They found that when gene expression is altered by, say, an added chromosome, it is altered in consistent patterns in every chromosome, not just the one with the irregularity.Ī few things follow from that: First, it lends credence to scientists’ long-running suspicion that chromosomes - between 50 and 100 base pairs of DNA - may be organized along functional lines, such that certain stretches of a chromosome may hold the genetic blueprint for proteins that work together in some predictable way. That natural experiment allowed a group of geneticists from Switzerland, Spain, the Netherlands and France to distill some fundamental insights into how chromosomes - and the genetic blueprints they contain - dictate the behavior of cells across the body. Down syndrome describes a set of cognitive and physical symptoms that result from an extra copy or part of a copy of chromosome 21. Scientists at the Texas A&M University Health Science Center (Texas A&M Health) have discovered that a nano-sized carbon material.
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