Chromosome pairing in X-irradiated Pteris longifolia L.
نویسندگان
چکیده
منابع مشابه
Mechanics and Dynamics of X-Chromosome Pairing at X Inactivation
At the onset of X-chromosome inactivation, the vital process whereby female mammalian cells equalize X products with respect to males, the X chromosomes are colocalized along their Xic (X-inactivation center) regions. The mechanism inducing recognition and pairing of the X's remains, though, elusive. Starting from recent discoveries on the molecular factors and on the DNA sequences (the so-call...
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Background: understanding the genomic alteration induced by ionizing radiation still remains to be a methodological challenge in genetic field. The energy released from this type of radiation can potentially causes structural and numerical alterations in lymphocytes, which in turn converts them into abnormal tumor cells. Chromosomal abnormalities associated with specific type of hematological m...
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Introduction: X chromosome inactivation (XCI) is a process during which one of the two X chromosomes in female human is silenced leading to equal gene expression with males who have only one X chromosome. Here we have investigated XCI ratio in females with opioid addiction to see whether XCI skewness in women could be a risk factor for opioid addiction. Methods: 30 adult females meeting DS...
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0 d Metabolic adaptations to arsenic-induced oxidative stress in Pteris vittata L and Pteris ensiformis L Nandita Singh , Lena Q. Ma *, Mrittunjai Srivastava , Bala Rathinasabapathi c a National Botanical Research Institute, Rana Pratap Marg, Lucknow 226001, India b Soil and Water Science Department, University of Florida, Box 110290, Gainesville, FL 32611-0290, USA c Horticultural Sciences Dep...
متن کاملChromosome pairing in polyploid cells.
The homologues in polyploid metaphases of air-dried suspensions of cultured cells are usually seen closely paired as diplochromosomes ("endore duplicated" cells) or unpaired as randomly distributed chromosomes ("poly ploid" cells). More often we find another configuration, a mixture of paired and unpaired chromosomes in the same metaphase, and describe here the conditions under which it appears...
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ژورنال
عنوان ژورنال: CYTOLOGIA
سال: 1978
ISSN: 0011-4545,1348-7019
DOI: 10.1508/cytologia.43.181