In which phase of cell division is oocyte arrested?
Correct answer: C. Prophase I
- A. Interphase
- B. Anaphase II
- C. Prophase I
- D. Both prophase I and II
Explanation
The correct answer is:c) Prophase IProphase I is the first phase of meiosis and is characterized by the pairing of homologous chromosomes in a process called synapsis. This phase includes the formation of genetic crossovers between homologous chromosomes, increasing genetic diversity. The oocyte is arrested in this phase for a long period of time, often for years or even decades, depending on the species and the individual. And for the 2nd time it is arrested at metaphase-II.
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Human reproduction covers the male and female reproductive organs, gamete formation, fertilization, implantation and hormonal regulation. The menstrual cycle includes ovarian and uterine changes controlled by pituitary and ovarian hormones, while sexually transmitted diseases are studied through their causes, transmission, symptoms, prevention and effects on fertility.
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