Journal
CURRENT OPINION IN CELL BIOLOGY
Volume 26, Issue -, Pages 123-131Publisher
CURRENT BIOLOGY LTD
DOI: 10.1016/j.ceb.2013.12.004
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Funding
- Cancer Research UK
- European Research Council
- Marie Curie postdoctoral fellowship
- National Institutes of Health
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The intermingling of genomes that characterizes sexual reproduction requires haploid gametes in which parental homologs have recombined. For this, homologs must pair during meiosis. In a crowded nucleus where sequence homology is obscured by the enormous scale and packaging of the genome, partner alignment is no small task. Here we review the early stages of this process. Chromosomes first establish an initial docking site, usually at telomeres or centromeres. The acquisition of chromosome-specific patterns of binding factors facilitates homolog recognition. Chromosomes are then tethered to the nuclear envelope (NE) and subjected to nuclear movements that 'shake off' inappropriate contacts while consolidating homolog associations. Thereafter, homolog connections are stabilized by building the synaptonemal complex or its equivalent and creating genetic crossovers. Recent perspectives on the roles of these stages will be discussed.
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