What stimulates the secondary oocyte to complete meiosis II?When a sperm cell penetrates the oocyte membraneOvulationA surge of luteinizing hormone (LH)Estrogen production that occurs between puberty and menopause

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27-03-2019
Biology

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What stimulates the secondary oocyte to complete meiosis II?When a sperm cell penetrates the oocyte membraneOvulationA surge of luteinizing hormone (LH)Estrogen production that occurs between puberty and menopause

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BioWizard BioWizard · Answer 1 · 2019-04-06T19:29:38+02:00

The correct answer is: When a sperm cell penetrates the oocyte membrane

The oocyte (is arrested at an early stage of the first meiotic division as a primary oocyte. During each menstrual cycle, one the day before ovulation gonadotropin hormone (luteinizing hormone) stimulates completion of meiosis 1. After the meiosis 1, 2 haploid daughter cells are formed: one becomes the secondary oocyte the other forms the first polar body. Newly formed secondary oocyte starts meiosis 2 which arrests at metaphase which will continue after the fertilization.