英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：

polyploidy    
多倍性

多倍性


请选择你想看的字典辞典：
单词字典翻译
polyploidy查看　polyploidy　在百度字典中的解释百度英翻中〔查看〕
polyploidy查看　polyploidy　在Google字典中的解释Google英翻中〔查看〕
polyploidy查看　polyploidy　在Yahoo字典中的解释Yahoo英翻中〔查看〕

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • evolution - Why is polyploidy lethal for some organisms while for . . .
    Polyploidy is the multiplication of number of chromosomal sets from 2n to 3n (triploidy), 4n (tetraploidy) and so on It is quite common in plants, for example many crops like wheat or Brassica for
  • Why is polyploidy much more common in plants than in animals?
    Polyploidy is common in plants than in animals because in animals sex determination mechanism involves number and type sex chromosomes Polyploidy will interfere with this mechanism and hence it is seen rarely in animals
  • Speciation by polyploidy - Biology Stack Exchange
    Speciation can occur by polyploidy My understanding of the process is as follows: 'polyploidy is when the number of chromosomes in an organism's cell doubles This means that the organism has more
  • How do we know for sure that Morus nigra (black mulberry) is . . .
    Wikipedia's Polyploidy and Morus nigra; Description both point out that Morus nigra or black mulberry is tetratetracontaploidic and cite two sources that both point to a third source in Plos One; Zheng et al (2015) Definition of Eight Mulberry Species in the Genus Morus by Internal Transcribed Spacer-Based Phylogeny
  • Polyploidy, or why plants of different species can produce fertile . . .
    Chromosomal doubling (polyploidy) occurs more frequently in plants and facilitates the fertility of the hybrid offspring Outcomes of the successful hybridization of different species of plants (i e yelding fertile offspring) can be easily observed in agriculture - for instance, Triticum aestivum is 6n, while Triticum durum is 4n
  • Newest polyploidy Questions - Biology Stack Exchange
    Why is polyploidy much more common in plants than in animals? [duplicate] There are very few animals with polyploidy like salamanders Why is it that polyploidy is so uncommon in animals? On the other hand there are numerous examples of polyploid plants If ut something to
  • Why does polyploidy give an evolutionary advantage?
    Another example of benefits from polyploidy, this time not in an evolutionary, but in a more individual context, is the fenomenon called hybrid vigor or heterosis Heterosis is a phenomenon in which a polyploid offspring of two diploid parents is more healthy and vigorous than its progenitors
  • Is there a practical upper limit to ploidy? - Biology Stack Exchange
    My second question is, is there an upper limit to synthetically induced polyploidy? Is the Bombyx mori's ploidy arbitrary, or is it at the max that technology can produce? Can it's ploidy be expanded further? Lastly, does arbitrarily high ploidy serve any purpose in agriculture or science? Is there a threshold where utility is no longer maximized?
  • Why was polyploidy not lethal in certain octodontid rodents?
    Polyploidy arises easily in both animals and plants, but reproductive strategies might prevent it from propagating in certain circumstances, rather than any reduction in fitness resulting from the genome duplication In fact, try rereading that answer and the references therein, it answers your general question
  • How does allele dominance work in polyploid organisms?
    Dominance works in the same way However, polyploids have complex inheritance patterns! 1 Punnett square for polyploid inheritance One might assume that you would need a four-dimensional table for tetraploids, a six-dimensional table for hexaploids, and an eight-dimensional table for octoploids The table you mentioned in this case should be the Punnett square And its two dimensions





中文字典-英文字典  2005-2009