- 行业: Archaeology
- Number of terms: 25214
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The hydrogen bonding between a particular purine and a particular pyrimidine in double-stranded nucleic acid molecules (DNA-DNA, DNA-RNA, or RNA-RNA). The major specific pairings are guanine with cytosine and adenine with thymine or uracil.
Industry:Archaeology
A stage in mitosis or meiosis in which chromosomes become aligned along the equatorial plane of the spindle.
Industry:Archaeology
Change in overall size that maintains the same relative proportional shape.
Industry:Archaeology
A process of reasoning by which more specific consequences are inferred by rigorous argument from more general propositions.
Industry:Archaeology
An enzyme that catalyzes the degradation of RNA to nucleotides.
Industry:Archaeology
In natural and artificial selection, the difference between the mean phenotype of the selected parents and the mean phenotype of the unselected population.
Industry:Archaeology
A projection found on the proximal ventral surface of a detached piece below the striking platform. Some researchers believe that a pronounced lip indicates the detached piece was removed with a soft hammer.
Industry:Archaeology
An important source of information on the reconstruction of prehistoric diets, this technique analyses the ratios of the principle isotopes preserved in human bone; in effect the method reads the chemical signatures left in the body by different foods. Isotopic analysis is also used in characterization studies.
Industry:Archaeology
