In what might be a surprise for some, the male sex chromosome is far more complex than its female counterpart. This is why it’s taken scientists so long to work out exactly what makes a male a male.

the scientists have made the map "medically legible" to doctors, not only biology decoders. If doctors discover a mutation in a region of Chromosome 7, for example, this map offers them some sense ...

Here we present an epistatic miniarray profile (E-MAP) 1 consisting of quantitative ... genes involved in various aspects of chromosome biology (including DNA replication/repair, chromatid ...

all of which have been sequenced so that the chromosome's map includes no gaps. "At the present time, this is the longest piece of contiguous DNA that has been sequenced. We made an effort to ...