Several kinds of sexual mosaicism are well documented in humans. Suggest how each of the following examples may have arisen by nondisjunction at mitosis a. $\mathrm{XX} / \mathrm{XO}$ (that is, there are two cell types in the body, $X X \text { and } X O)$ b. $\mathrm{XX} / \mathrm{XXYY}$ c. $\mathrm{XO} / \mathrm{XXX}$ d. $\mathrm{XX} / \mathrm{XY}$ e. $\mathrm{XO} / \mathrm{XX} / \mathrm{XXX}$
Added by Kara S.
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XX/XO: This could occur if there was nondisjunction during an early mitotic division after fertilization. One daughter cell would receive both X chromosomes (XX), while the other would receive none (XO). b. XX/XXYY: This could occur if there was nondisjunction Show more…
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