Most triploid zygotes arise from
A) fertilization of a diploid egg by a normal haploid sperm.
B) fertilization of a normal haploid egg by a diploid sperm.
C) fertilization of a normal haploid egg by two sperm.
D) nondisjunction during the zygote's first mitotic division.
E) fusion of the zygote with an unfertilized egg.
Correct Answer:
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