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  2. 1q21.1 duplication syndrome - Wikipedia

    en.wikipedia.org/wiki/1q21.1_duplication_syndrome

    1q21.1 duplication syndrome arises from microduplications of the BP3-BP4 region, containing at least seven genes and a minimum duplicated region of ~1.2 Mb of unique DNA sequence. [7] 1q21.1 duplication syndrome has an autosomal dominant inheritance pattern, where 18–50% of deletions happen de novo and 50–82% are inherited from their ...

  3. Global Positioning System - Wikipedia

    en.wikipedia.org/wiki/Global_Positioning_System

    As opposed to the year, month, and day format of the Gregorian calendar, the GPS date is expressed as a week number and a seconds-into-week number. The week number is transmitted as a ten- bit field in the C/A and P(Y) navigation messages, and so it becomes zero again every 1,024 weeks (19.6 years).