Abstract
CYTOLOGY of the common cockroach Periplaneta americana (Blattidae) dates back to 19091, and yet recent re-examination has not only brought to light interesting details, but also much controversy2–8. It was therefore felt necessary to examine the locally available species of cockroaches with the view of understanding the intricacies of the problem. Absence of diplotene-diakinesis and chiasmata in meiosis in the male has been claimed and various explanations have been marshalled2,9,10. But Lewis and John7,8, taking into consideration all the aspects of indirect evidence, state that chiasmata might occur at the terminal ends of chromosomes and might terminalize rapidly.
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References
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RAJASEKARASETTY, M., RAMANAMURTHY, C. Meiosis in the Male Periplaneta americana. Nature 197, 1325–1326 (1963). https://doi.org/10.1038/1971325a0
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DOI: https://doi.org/10.1038/1971325a0
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