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In which of the following will you expect to see chiasma?(a) Male diptera(b) Female lepidoptera(c) Scorpions(d) Female DrosophilaI got this question during an interview.Query is from Meiosis Prophase 1 : Diplotene and Diakinesis in chapter Chromosomal Changes During Meiosis of Cytogenetics

Answer»

Right choice is (d) FEMALE Drosophila

The best I can explain: Achiasmatic meiosis has been REPORTED in males of HIGHER Diptera, Panorpa (SCORPION fly), some grasshoppers and scorpions. It is also seen during OOGENESIS in Copepoda and Lepidoptera. However, female drosophila show recombination, hence chiasma.



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