منابع مشابه
Molecular aspects of avian oogenesis and fertilisation.
In this paper, we summarise studies which have been carried out on the metabolism of nucleic acids (maternal RNA, DNA, nucleolytic enzymes) in avian oocytes and embryos (Japanese quail, Coturnix coturnix japonica ) within the last 10 years in the Institute of Genetics and Animal Breeding of the Polish Academy of Sciences. The accumulation of maternal RNA in the quail oocyte during oogenesis is ...
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در این پایان نامه، درهمتنیدگی بین یک سیستم نقطه کوانتومی دوگانه(مولکول نقطه کوانتومی) و میدان مورد مطالعه قرار گرفته است. از آنتروپی ون نیومن به عنوان ابزاری برای بررسی درهمتنیدگی بین اتم و میدان استفاده شده و تاثیر پارامترهای مختلف، نظیر تونل زنی(که توسط تغییر ولتاژ ایجاد می شود)، شدت میدان و نسبت دو گسیل خودبخودی بر رفتار درجه درهمتنیدگی سیستم بررسی شده اشت.با تغییر هر یک از این پارامترها، در...
15 صفحه اولPost-transcriptional control of gene expression during mouse oogenesis.
Post-transcriptional mechanisms play a central role in regulating gene expression during oogenesis and early embryogenesis. Growing oocytes accumulate an enormous quantity of messenger RNAs (mRNAs), but transcription decreases dramatically near the end of growth and is undetectable during meiotic maturation. Following fertilization, the embryo is initially transcriptionally inactive and then be...
متن کاملRequirement for cell-proliferation control genes in Drosophila oogenesis.
Genes that are required for cell proliferation control in Drosophila imaginal discs were tested for function in the female germ-line and follicle cells. Chimeras and mosaics were produced in which developing oocytes and nurse cells were mutant at one of five imaginal disc overgrowth loci (fat, lgd, lgl, c43 and dco) while the enveloping follicle cells were normal. The chimeras were produced by ...
متن کاملMolecular genetic control of leaf lifespan in plants - A review
Leaf senescence constitutes the last stage of leaf development in plants and proceeds through a highly regulated program in order to redistribution of micro- and macro-nutrients from the senescing leaves to the developing/growing plant organs. Initiation and progression of leaf senescence is accompanied by massive sequential alterations at various levels of leaf biology including leaf morpholog...
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ژورنال
عنوان ژورنال: Biochimica et Biophysica Acta (BBA) - Molecular Basis of Disease
سال: 2012
ISSN: 0925-4439
DOI: 10.1016/j.bbadis.2012.05.013