منابع مشابه
Genetic control of epithelial tube size
Animals depend upon epithelial and endothelial tubes to transport gases and liquids in the body, and the sizes of the tubes are critical for their transport function. Tube size must be controlled not only during tube formation but throughout development in order to maintain functionality as the animal grows. For example, the human aorta expands approx. 100-fold between embryonic and adult life ...
متن کاملGenetic control of size in Drosophila.
During the past ten years, significant progress has been made in understanding the basic mechanisms of the development of multicellular organisms. Genetic analysis of the development of Caenorhabditis elegans and Drosophila has unearthed a fruitful number of genes involved in establishing the basic body plan, patterning of limbs, specification of cell fate and regulation of programmed cell deat...
متن کاملGenetic control of floral size and proportions.
Floral size is an ecologically important trait related to pollination success and genetic fitness. Independently of the sexual reproduction strategy, in many plants, floral size seems to be controlled by several genetic programs that are to some extent independent of vegetative growth. Flower size seems to be governed by at least two independent mechanisms, one controlling floral architecture t...
متن کاملHomology gives size control in genetic programming
The Maximum Homologous Crossover attempts to preserve similar structures from parents by aligning them according to their homology. In this paper, it is successfully tested on the classical Even-N Parity Problem where it demonstrates interesting abilities in bloat reduction. Then, we show that this operator gives an accurate control of the size of programs during the evolution and thus, allows ...
متن کاملcontrol of the optical properties of nanoparticles by laser fields
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 اولذخیره 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: Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences
سال: 2000
ISSN: 0962-8436,1471-2970
DOI: 10.1098/rstb.2000.0630