Some dioecious species have the XY genotype for male and XX for female. After double fertilization, what would be the genotypes of the embryos and endosperm nuclei?
A) embryo X/endosperm XX or embryo Y/endosperm XY
B) embryo XX/endosperm XX or embryo XY/endosperm XY
C) embryo XX/endosperm XXX or embryo XY/endosperm XYY
D) embryo XX/endosperm XXX or embryo XY/endosperm XXY
E) embryo XY/endosperm XXX or embryo XX/endosperm XXY
Answer: C
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