A female ovary produces one ovum at a time every month. This implies that not more than one zygote can be formed at a time. How are twins produced then?
Added by Carla S.
Step 1
Step 1: Understand the basic premise: A female ovary typically releases one ovum (egg) per menstrual cycle, which means that under normal circumstances, only one zygote (fertilized egg) can be formed at a time. Show more…
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Which of the following represents the fertilization process for monozygotic twins? a. One egg is fertilized by two different sperm. b. One egg splits and is then fertilized by two different sperm. c. One egg is fertilized by one sperm and then splits. d. Two eggs are fertilized by the same sperm.
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1. Monozygotic twins 2. Fraternal twins 3. Both Divide through the process of mitosis. Two eggs are released at ovulation. One egg is fertilized. Are always the same gender. Genetically unique. Genetically identical. More common in women who undergo fertility treatment.
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During spermatogenesis, four sperms are produced, but during oogenesis, only one ovum develops. What may be a good explanation for this
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