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The first round of meiosis of oogonium is completed in which follicle?(a) Graafian follicle(b) Primary follicle(c) Secondary follicle(d) Tertiary follicleThis question was posed to me in an interview for internship.I'd like to ask this question from Human Reproduction in division Human Reproduction of Biology – Class 12

Answer»

The correct CHOICE is (d) TERTIARY follicle

The explanation: The OOGONIUM starts meiosis but is arrested at PROPHASE I, thereby forming primary oocyte. This oocyte then forms a primary, then secondary, and finally a tertiary follicle with the addition of granulosa cells, theca and ANTRUM. This stage of follicle promotes further division of primary oocyte. Thus the first division of meiosis is completed in the tertiary follicle.



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