For the first time, the Y chromosome has been fully sequenced.

“Large portions of the Y chromosome have long been inaccessible to scientists, namely on account of what’s known as satellite DNA, stretches of short sequences of nucleotides repeated over and over again. On top of that, the chromosome also contains many palindromes, sequences of different nucleic acids that are the same forward and backward, like the words “kayak” and “civic.” These, too, were once challenging to decode.” ~ learn more