Getting sperm and egg together: things conserved and things diverged

J P Evans1

  • 1Division of Reproductive Biology, Department of Biochemistry and Molecular Biology, Johns Hopkins University, School of Hygiene and Public Health, Baltimore, Maryland 21205, USA. jpevans@jhsph.edu

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Meiosis is the division of a diploid cell into haploid cells forming sperm and eggs in animals through differentiation. Meiosis I is the first stage of meiosis, where the genetic recombination of homologous chromosomes and the reduction of the ploidy level by half occurs.
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