Sequential analysis of meiotic prophase in grasshoppers.

Vázquez, Ana María; Martínez, Cristina Calle

doi:10.1508/cytologia.45.641

Cited by 3 publications

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References 39 publications

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“…It is worth noting the relatively high degree of condensation of the megameric bivalent which allows for the identification of the female diffuse stage. Taking into account the results obtained by Vfizquez et al (1980), who located the diffuse stage of grasshopper meiosis between zygotene and diplotene, and our results showing the megameric pair to be indistinguishable at female zygotene, it can be preposed that the precocious condensation of the female megameric bivalent starts during this inconspicuous stage, or else shortly after the end of zygotene. In the male it starts earlier, being distinguishable when zygotene is reached.…”

Section: Discussionsupporting

confidence: 66%

Males vs. female meiotic prophase in a grasshopper, Arcyptera microptera (Orthoptera: Acridiae)

1990

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Female and male first meiotic prophase are analyzed in the grasshopper Arcyptera microptera with special reference to the heteropycnotic chromatin. Differences in the behaviour of the megameric and X-chromosomes, in nuclear size and in the response to C-banding treatment are described. The evidence for a distinctive meiotic prophase in both sexes is compared with results obtained in other species of grasshoppers by other authors using more advanced stages. The discussion centers around the role of the diffuse stage and the differential behaviour of the Xchromosome in the two sexes.

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Section: Discussionsupporting

confidence: 66%