Respuesta :
Dizygotic (dz) twins begin life as two separate zygotes created by the fertilization of two ova by two sperm at roughly the same time. this type of twins is also referred to as fraternal twins.
What is fertilization ?
- A new individual organism or progeny is created when gametes are fused during fertilization, often referred to as fertilization, impregnation, syngamy, or generative fertilization.
- The stages of fertilization are made up of four separate mechanisms:
- Sperm preparation comes first, followed by sperm-egg recognition and binding, sperm-egg fusion, fusion of the pronuclei of the sperm and the egg, and activation of the zygote.
- A cell (zygote) created after conception is capable of cell division to create a new person.
- This can happen either inside the female's body (internal fertilization) or outside (external fertilization).
- Human reproduction serves as an illustration of the former, whilst seahorse reproduction illustrates the latter.
Learn more about fertilization here:
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