Genomics of sex chromosomes

Ray Ming, Paul H. Moore

Research output: Contribution to journalReview articlepeer-review


Sex chromosomes in plants and animals are distinctive, not only because of their gender-determining role but also for genomic features that reflect their evolutionary history. The genomic sequences in the ancient sex chromosomes of humans and in the incipient sex chromosomes of medaka, stickleback, papaya, and poplar exhibit unusual features as consequences of their evolution. These include the enormous palindrome structure in human MSY, a duplicated genomic fragment that evolved into a Y chromosome in medaka, and a 700 kb extra telomeric sequence of the W chromosome in poplar. Comparative genomic analysis of ancient and incipient sex chromosomes highlights common features that implicate the selection forces that shaped them, even though evolutionary origin, pace, and fate vary widely among individual sex-determining systems.

Original languageEnglish (US)
Pages (from-to)123-130
Number of pages8
JournalCurrent opinion in plant biology
Issue number2
StatePublished - Apr 2007

ASJC Scopus subject areas

  • Plant Science


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