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4 results for “sex chromosome pre-reduction”
Figure 8 from: Grozeva S, Simov N, Langourov M, Dalakchieva S (2013) Sex chromosome pre-reduction in male meiosis of Lethocerus patruelis (Stål, 1854) (Heteroptera, Belostomatidae) with some notes on the distribution of the species. ZooKeys 319: 119-135. https://doi.org/10.3897/zookeys.319.4384
Figure 8 - Distribution of Lethocerus patruelis (Stål, 1854) on Balkan Peninsula: ● published records; ♦ new records with data of breeding; ✹ new records of specimens attracted to light.
Figure 1 from: Grozeva S, Simov N, Langourov M, Dalakchieva S (2013) Sex chromosome pre-reduction in male meiosis of Lethocerus patruelis (Stål, 1854) (Heteroptera, Belostomatidae) with some notes on the distribution of the species. ZooKeys 319: 119-135. https://doi.org/10.3897/zookeys.319.4384
Figure 1 - Internal male reproductive system: t testis; v d vas deferens; v s vesicula seminalis d e ductus ejaculatorius.
Figure 2-7 from: Grozeva S, Simov N, Langourov M, Dalakchieva S (2013) Sex chromosome pre-reduction in male meiosis of Lethocerus patruelis (Stål, 1854) (Heteroptera, Belostomatidae) with some notes on the distribution of the species. ZooKeys 319: 119-135. https://doi.org/10.3897/zookeys.319.4384
Figure 2-7 - 2 Spermatogonial metaphases: two of larger chromosomes, X and Y, each show a subtelomeric unstained gap, representing the nucleolus organizing region (NOR) (arrow head) (routine staining) 3 Meiotic prophase:sex chromosomes are visible as a large, positively heteropycnotic and brightly fluorescent body (CMA3 staining) 4 Metaphase I (n = 13) (routine staining) 5 Metaphase I: GC-rich NORs located on both X and Y chromosomes (CMA3 staining) 6 After the first meiotic division all the chromosomes segregate to opposite poles (6a) resulting in two daughter MII cells (6b) with 13 elements each, 11A + m + X and 11A + m + Y, respectively (routine staining) 7 Metaphase I: DAPI staining did not reveal any differentiation along the length of the chromosomes. Bar = 10μm.
Figure 9 from: Grozeva S, Simov N, Langourov M, Dalakchieva S (2013) Sex chromosome pre-reduction in male meiosis of Lethocerus patruelis (Stål, 1854) (Heteroptera, Belostomatidae) with some notes on the distribution of the species. ZooKeys 319: 119-135. https://doi.org/10.3897/zookeys.319.4384
Figure 9 - Suggested pathways of karyotype evolution in the genus Lethocerus.
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