Table 2: IGF-II gene imprinting status in the abnormal and normal embryonic development groups.

Group Genotype AA/BBAB
% %

Normal group2668.41231.6
Abnormal group2655.32144.7
(chromosomal abnormality)635.31164.7

A, B, and AB indicates three kinds of genetic imprinting status, AA/BB indicate normal imprinting, AB indicates gene imprinting loss.