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Fig. 2 | Mobile DNA

Fig. 2

From: Insertion and deletion polymorphisms of the ancient AluS family in the human genome

Fig. 2

Characterization of the 39 AluS deletion polymorphism candidates. a The pre-deletion allele contains the Alu element (dark gray block arrow); flanking genomic sequence is depicted as a thin dark gray line on both sides of the Alu element. b Schematic of the seven categories of post-deletion alleles observed among the 39 AluS deletion polymorphism candidates. Polymorphic sequences are depicted in light gray; the dark gray parts indicate the sequences that do not vary among individuals. Deletion polymorphism candidates are defined as polymorphisms that encompass only a portion of the Alu element at that locus (e.g. the top five post-deletion allele categories) or that are not limited to only the Alu element (e.g. the bottom four categories). The last category (marked by an asterisk) includes two elements that have features of non-classical Alu insertions and may not be true deletion polymorphisms (see Results). All Alu elements are shown 5′ to 3′. Observed frequencies of each post-deletion allele category among the 39 AluS deletion polymorphism candidates are shown

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