Fig. 1 | Genetics in Medicine

Fig. 1

From: Prospective validation of quantitative fluorescent polymerase chain reaction for rapid detection of common aneuploidies

Fig. 1

Representative trisomic STR patterns. Trisomic specimens have two possible patterns: trisomic triallelic, in which three copies of a chromosome are indicated by the presence of three peaks for corresponding chromosome-specific STRs, all of which have the same fluorescence intensity and a ratio between the areas of 1:1:1 (D21S1412) and trisomic diallelic, which produces two unbalanced fluorescent peaks with an area ratio of 2:1 or 1:2 (D21S1809).

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