Individuals with Turner syndrome (monosomy X) have only one sex chromosome–a single X chromosome. Such individuals are produced when nondisjunction results in a gamete with no sex chromosome,
which subsequently fuses with a normal gamete. What would be the sex chromosome complement of an individual produced by fusion of a normal gamete with the gamete that ended up with the extra chromosome missing from the Turner syndrome patient?
A) XXX
B) XXY
C) XYY
D) XY
E) Either A or B would be a possible chromosome complement.
Answer: E
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