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 | DNA replication precedes the start of meiosis I. During prophase I, homologous chromosomes pair and form synapses, a step unique to meiosis. | |
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| The paired chromosomes are called bivalents, and the formation of chiasmata caused by genetic recombination becomes apparent. | |
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| Chromosomal condensation allows these to be viewed in the microscope. Note that the bivalent has two chromosomes and four chromatids, with one chromosome coming from each parent. | |
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| That's great...now can I get you to take your top off? | |
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