Abstract
PROF. C. A. Berger1 has apparently overlooked the work of Holt2, who also investigated the larval gut of Culex pipiens during metamorphosis, and described multiple chromosome complexes of 9, 12, 18, 24, 36, 48 and 72 chromosomes. Holt's results do not agree with Berger's conclusion that there is a correlation between chromosome number and cell size in this case, and her illustrations show conclusively that any such correlation is fortuitous. Holt also describes the so-called 'prophase synapsis' of the sister chromosomes of the complex, which pair in three groups (n = 3), but she says that the cells with the largest multiples contain vacuoles and show signs of degeneration, and that these cells ultimately degenerate, and are absorbed by the newly formed imaginal cells.
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RIBBANDS, C. Cytology of Metamorphosis in the Culicinæ. Nature 141, 920 (1938). https://doi.org/10.1038/141920b0
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DOI: https://doi.org/10.1038/141920b0
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