Pairing of homologous chromosomes (synapsis) commences at one or several points on the chromosome and is clearly seen during PACHYTENE of meiosis I.

 
  • 同源染色體兩兩成對平行靠攏,這一現象也稱(chēng)聯(lián)會(huì ),聯(lián)會(huì )發(fā)生在染色體的一點(diǎn)或多點(diǎn)上,可以在減數第一次分裂的粗線(xiàn)期觀(guān)察到。
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