Answer:
e. the idea that the alleles in a polar body are the same as those in the oocyte to which it was attached.
Explanation:
Meiosis I in primary oocyte forms a secondary oocyte and a polar body. The secondary oocyte undergoes meiosis II and forms an ovum (egg cell) and a polar body.
Since polar body and ovum/secondary oocyte are derived from the same precursor cell, they share common alleles. Hence, a biopsy of polar bodies helps to diagnose any possible genetic defects in the embryo during genetic screening.