منابع مشابه
The way of the samurai snail.
Sexual selection favors strategies that enhance the fertilization chances of sperm donors, and sexual conflict can ensue when these adaptations negatively affect sperm recipients (Arnqvist and Rowe 2005). Such conflict often causes counteradaptive coevolution that can result in bizarre mating behaviors in separate-sex (Arnqvist and Rowe 2005) and hermaphroditic species (Michiels and Newman 1998...
متن کاملChromosome segregation: Samurai separation of Siamese sisters
How do cells ensure that sister chromatids are precisely partitioned in mitosis? New studies on budding yeast have revealed that sister chromatid separation at anaphase requires endoproteolytic cleavage of a protein that maintains the association between sister chromatids.
متن کاملthe effect of taftan pozzolan on the compressive strength of concrete in the environmental conditions of oman sea (chabahar port)
cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...
Random ? Is the Cosmos
Few of Albert Einstein’s sayings have been as widely quoted as his remark that God does not play dice with the universe. People have naturally taken his quip as proof that he was dogmatically opposed to quantum mechanics, which views randomness as a built-in feature of the physical world. When a radioactive nucleus decays, it does so spontaneously; no rule will tell you when or why. When a part...
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ژورنال
عنوان ژورنال: Nature
سال: 1995
ISSN: 0028-0836,1476-4687
DOI: 10.1038/373113a0