Recycling the Y Chromosome

See allHide authors and affiliations

Science  07 Jan 2005:
Vol. 307, Issue 5706, pp. 50-51
DOI: 10.1126/science.1107295

You are currently viewing the summary.

View Full Text

Log in to view the full text

Log in through your institution

Log in through your institution


The Y chromosome is a rather peculiar component of the genome: It is diminutive in size, and contains few genes but many repetitive DNA sequences. As Graves points out in her Perspective, the meager size of the Y chromosome belies its fascinating evolutionary history. A comparison of the Y chromosomes of two fruit fly species (Carvalho and Clark) shows that Y chromosomes may have completely different origins, and may even be recycled onto non-sex chromosomes (autosomes).