Description of the pre-reductional sex chromosome during male meiosis of Pachylis laticornis (Heteroptera: Coreidae)
نویسندگان
چکیده
منابع مشابه
Description of the pre-reductional sex chromosome during male meiosis of Pachylis laticornis (Heteroptera: Coreidae).
In Heteroptera, the division of sex chromosomes is well defined as post-reductional for most of species, i.e., the first meiotic division is equational and the second is reductional. However, in some species pre-reductional division has been observed, whereby the first meiotic division is reductional and the second is equational. These include Anisops fieberi (Notonectidae), Ectrychotes dispara...
متن کاملKaryotype and male pre-reductional meiosis of the sharpshooter Tapajosa rubromarginata (Hemiptera: Cicadellidae).
Cicadellidae in one of the best represented families in the Neotropical Region, and the tribe Proconiini comprises most of the xylem-feeding insects, including the majority of the known vectors of xylem-born phytopathogenic organisms. The cytogenetics of the Proconiini remains largely unexplored. We studied males of Tapajosa rubromarginata (Signoret) collected at El Manantial (Tucumán, Argentin...
متن کاملthe description of verb phrase of dezfuli dialect
شهرستان دزفول در بخش شمالغربی خوزستان با مساحت 4700 کیلومتر مربع و جمعیت 380416 (1375 ) واقع شده است . دزفولیها به گویش دزفولی تکلم می کنند ، گویشی که جز دسته جنوبی زبانهای ایرانی است . در این پایان نامه نویسنده قصد دارد گروه فعلی گویش دزفولی را توصیف کند. همچنین به بحث در باره ریشه فعلی و ستاک های مختلف ، ساخت سببی ، فعل های منظم و نامنظم ، ویژگیهای فعل مانند زمان ، وجه و نمود می پردازد در فصل...
Sex chromosome pre-reduction in male meiosis of Lethocerus patruelis (Stål, 1854) (Heteroptera, Belostomatidae) with some notes on the distribution of the species
The karyotype and meiosis in males of giant water bug Lethocerus patruelis (Heteroptera: Belostomatidae: Lethocerinae) were studied using standard and fluorochrome (CMA3 and DAPI) staining of chromosomes. The species was shown to have 2n = 22A + 2m + XY where 2m are a pair of microchromosomes. NORs are located in X and Y chromosomes. Within Belostomatidae, Lethocerus patruelis is unique in show...
متن کاملThe Dynamics of Homologous Chromosome Pairing during Male Drosophila Meiosis
BACKGROUND Meiotic pairing is essential for the proper orientation of chromosomes at the metaphase plate and their subsequent disjunction during anaphase I. In male Drosophila melanogaster, meiosis occurs in the absence of recombination or a recognizable synaptonemal complex (SC). Due to limitations in available cytological techniques, the early stages of homologous chromosome pairing in male D...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Genetics and Molecular Research
سال: 2016
ISSN: 1676-5680
DOI: 10.4238/gmr.15027592