why the fusion of sperm and ova do not occur during pregnancy
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actually Ovary stop to produce ova after getting pregnent once..so there is no possible chance of fusion.
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The fusion of sperm and ova does not occur during pregnancy because-
- The fusion of two gametes, sperm and ova is fertilisation and the zygote thus formed is implanted in the uterus.
- Fertilisation between the two gametes occurs in the ampullary-isthmic junction.
- During pregnancy there is a high level of progesterone is regulated in the blood. progesterone is produced by the corpus luteum and is responsible for maintaining pregnancy.
- So, for the fusion of sperm and ova, fewer progesterone conditions are required as compared to that in pregnancy.
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