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英文字典中文字典相关资料:


  • Genome comparison chart | Learn Science at Scitable - Nature
    Genome size is the total number of base pairs in an organism While the number of genes in an organism's DNA (red bars) varies from species to species (numbers at right), it is not always
  • Why Do Scientific Names Have Two Parts? | Britannica
    All these trees are very closely related, so all have Prunus in their binomial names The species name persica distinguishes the peach from other members of the genus, such as the apricot, which is Prunus armeniaca, and the almond, which is Prunus dulcis Some scientific names have three parts: the genus, the species, and a subspecies
  • Khan Academy
    If you're seeing this message, it means we're having trouble loading external resources on our website If you're behind a web filter, please make sure that the domains * kastatic org and * kasandbox org are unblocked
  • Nazarbayev University LibGuides: Biology: Branches of Biology
    Evolutionary biology – the study of the origin and descent of species over time; Genetics – the study of genes and heredity Genomics – the study of genomes; Epigenetics – the study of heritable changes in gene expression or cellular phenotype caused by mechanisms other than changes in the underlying DNA sequence
  • Food and Agriculture Organization
    The Food and Agriculture Organization (FAO) works to improve food security, nutrition, and agricultural sustainability worldwide
  • Superorganismality and caste differentiation as points of no . . .
    Superorganismality: (sensu stricto; Seeley, 1989, p 548) ‘[I]n many species of social insects the female members of a colony (queens and workers) fight over who will lay eggs In the most advanced species of social insects, however, there appears to be little if any conflict within colonies, so that these colonies do represent superorganisms ’
  • National Center for Biotechnology Information
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