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Fig. 6 | Molecular Cytogenetics

Fig. 6

From: Trisomy Xp and partial tetrasomy Xq resulting from gain of a rearranged X chromosome in a female fetus: pathogenic or not?

Fig. 6

Proposed mechanism for the origin of the extra rearranged X chromosome. a: Interchromatid exchange in maternal meiosis, b: formation of a dicentric chromosome, loss of the acentric fragments, c: separation of two centromeres at anaphase resulting in breakage near one of the centromeres, d: inv dup(X) with del(X) and satellited Xq. Blue arrows indicate breakpoints

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