 <translate> Q: Shigewa: Halin hawan chromosomal (ko ƙetare) shine musayar kayan kwayar halitta tsakanin homologous chromosomes wanda ke haifar da chromosomes masu haɗuwa yayin haifuwa ta jima'i. Yana daya daga cikin matakai na ƙarshe na sake haɗuwa da kwayoyin halitta, wanda ke faruwa a cikin matakin pachytene na prophase I na meiosis a lokacin wani tsari da ake kira synapsis. Synapsis yana farawa kafin tsarin synaptonemal ya bunkasa kuma ba a kammala ba har zuwa kusa da ƙarshen prophase I. Crossover yawanci yakan faru ne lokacin da yankuna masu dacewa a kan daidaitaccen chromosomes karya sannan kuma su sake haɗuwa da sauran chromosome.  Tambaya: Bisa ga wannan nassin, a wane lokaci ne ƙetarewar zai faru a cikin meiosis? Bari mu ba da rafi na sani na farko: <ibo> Q: Passage: Chromosomal crossover (ma ọ bụ crossing over) bụ mgbanwe nke mkpụrụ ndụ ihe nketa n'etiti homologous chromosomes nke na-ebute chromosomes recombinant n'oge mmepụta mmekọahụ. Ọ bụ otu n'ime ihe ndị ikpeazụ na-eme n'ọkpụkpụ mkpụrụ ndụ ihe nketa, nke na-eme n'ọgbọ pachyte nke prophase I nke meiosis n'oge usoro a na-akpọ synapsis. Synapsis na-amalite tupu synaptonemal complex etolite ma ọ gaghị agwụ agwụ ruo mgbe ọ fọrọ nke nta ka ọgwụgwụ nke prophase I. Crossover na-emekarị mgbe mpaghara ndị kwekọrọ na chromosomes kwekọrọ na-agbaji wee jikọọ ọzọ na chromosome ọzọ.  Ajụjụ: Dị ka ihe a e kwuru n'amaokwu a si kwuo, olee mgbe ụmụ anụmanụ na ụmụ anụmanụ na-agbakọ n'otu ebe? Ka anyị buru ụzọ mee ka uche anyị dịrị n'ihe anyị na-eme: 