Now by now you all know I’m interested in bringing proper science to the people – none of this complicated jargon and ridiculous stories that you can sometimes find in the media.
This article “Alfie Clamp, the only boy in the world with an extra strand of DNA” is a total jem! Featured on page 3 of the Metro, whoever wrote it has no idea what they’re talking about! I particularly love them quoting doctors as saying they are unsure if the disease will persist as the child gets older!
Briefly for those who don’t know much about DNA, having an extra “leg” on a chromosome does not equate having an extra strand of DNA as chromosomes are composed of a double-strand of DNA. As in other cases of chromosomal diseases (Down syndrome for example), it is probably due to a malfunctioning of a process of cell division. It certainly adds an extra genetic portion to the genome (which usually if not always disrupts healthy living) but in no way does it transform the actual DNA of the individual from a double strand to a triple one!