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

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

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Animal Breeding and Transgenic Animal
Superovulation is an

decreased ovulatory response by internal hormonal therapy
increased ovulatory response by internal hormonal therapy
decreased ovulatory response by external hormonal therapy
increased ovulatory response by external hormonal therapy

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