Animal Breeding and Transgenic Animal
DNA is microinfected into the fertilized egg

before the fusion of male and female nuclei
after the fusion of male and female nuclei
any time, it can be infected
at the time of fusion of male and female nuclei

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Animal Breeding and Transgenic Animal
Superovulation is primarily the result of

decreased atresia in small follicles (<1.7 mm)
decreased atresia in medium and large follicles (>1.7 mm)
increased atresia in medium and large follicles (>1.7 mm)
increased atresia in the large follicles (<1.7 mm)

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