The Embryobit #12 was the last bit of Education Module 1, "Assisted Fertilization".
Answer for Embryobit #12: The correct answer #1: Female pronucleus and degenerating sperm nucleus.
Since the oocytes were injected with an artificial activation trigger, spermatozoa did not need to contribute to activation with second polar body extrusion and female pronucleus formation. In the case of Kartagener's syndrom, it is impossible to visually distinguish between degenerating (dead) and immotile live spermatozoa. Since mingling together sperm and oocyte DNA is rare, it is most likely that degenerating sperm cells were chosen for injection and would be found along with female pronucleus at examination.
In this instance decondensing sperm chromatin can be seen entangled with early female pronucleus. The will likely result in a single pronucleated diploid zygote. Such embryos have been shown to implant and result in term pregnancy.
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