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The centromere is a chromosomal locus that regulates the proper pairing and segregation of the chromosomes during cell division. Despite their conserved, essential function, centromeres are characterized by the rapid evolution of both centromeric DNA and proteins.
This book presents current views on centromere structure and identity. It deals with the epigenetic concept of centromere establishment and maintenance as well as with the role of DNA and centromeric transcripts in centromere formation and function. Special emphasis is placed on centromere evolution: different evolutionary models are discussed in detail and the latest research on the evolution of new centromeres and neocentromeres is presented.
The Epigenetic Basis for Centromere Identity.- The centromere-drive hypothesis: a simple basis for centromere complexity.- Centromere-competent DNA: structure and evolution.- The role of ncRNA in centromeres: a lesson from marsupials.- Evolutionary New Centromeres in Primates.- Structure and evolution of plant centromeres.