Question

A 3 -year-old child exhibited some early indication of Turner syndrome, which results from a $45, \mathrm{X}$ chromosome composition. Karyotypic analysis demonstrated two cell types: $46, \mathrm{XX}$ (normal) and $45, \mathrm{X}$. Propose a mechanism for the origin of this mosaicism.

Name: A 3 -year-old child exhibited some early indication of Turner syndrome, which results from a 45, X chromosome composition. Karyotypic analysis demonstrated two cell types: 46, XX (normal) and 45, X. Propose a mechanism for the origin of this mosaicism.
Uploaded: 2022-12-13T18:56:23-08:00
Duration: 6 min 38 s
Channel: Sri K
Description: A 3 -year-old child exhibited some early indication of Turner syndrome, which results from a 45, X chromosome composition. Karyotypic analysis demonstrated two cell types: 46, XX (normal) and 45, X. Propose a mechanism for the origin of this mosaicism.

          A 3 -year-old child exhibited some early indication of Turner syndrome, which results from a $45, \mathrm{X}$ chromosome composition. Karyotypic analysis demonstrated two cell types: $46, \mathrm{XX}$ (normal) and $45, \mathrm{X}$. Propose a mechanism for the origin of this mosaicism.

Added by Jason W.

Biology for AP Courses

Julianne Zedalis, John Eggebrecht

Instant Answer

Solved by Expert Sri K

12/13/2022

Step 1

**Step 2:** In the case of Turner syndrome, mosaicism is observed where there are two cell types present: 46, XX (normal) and 45, X. **Step 3:** The mechanism for the origin of this mosaicism is due to mitotic non-disjunction in the X chromosome during Show more…

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A 3 -year-old child exhibited some early indication of Turner syndrome, which results from a $45, \mathrm{X}$ chromosome composition. Karyotypic analysis demonstrated two cell types: $46, \mathrm{XX}$ (normal) and $45, \mathrm{X}$. Propose a mechanism for the origin of this mosaicism.