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  2. Tetra (monkey) - Wikipedia

    en.wikipedia.org/wiki/Tetra_(monkey)

    Tetra was created using embryo splitting, a process where the cells in the embryo are split at the eight–cell stage to create four identical two cell embryos. [1] This was the first time this technique had proven successful in monkeys, although it is often used in cattle. [1]

  3. Cloning - Wikipedia

    en.wikipedia.org/wiki/Cloning

    The embryo will become genetically identical to the patient. [15] The embryo will then form a blastocyst which has the potential to form/become any cell in the body. [16] The reason why SCNT is used for cloning is because somatic cells can be easily acquired and cultured in the lab. This process can either add or delete specific genomes of farm ...

  4. Zhong Zhong and Hua Hua - Wikipedia

    en.wikipedia.org/wiki/Zhong_Zhong_and_Hua_Hua

    The main difficulty was likely the proper programming of the transferred nuclei to support the growth of the embryo. [3] Tetra (born October 1999), a female rhesus macaque, was created by a team led by Gerald Schatten of the Oregon National Primate Research Center using a different technique, called "embryo splitting". She is the first cloned ...

  5. Embryo splitting - Wikipedia

    en.wikipedia.org/wiki/Embryo_splitting

    Embryo splitting may refer to: when spontaneous, the natural way in which identical twins are formed. when artificially induced, a method of cloning. See Cloning#Methods

  6. Somatic cell nuclear transfer - Wikipedia

    en.wikipedia.org/wiki/Somatic_cell_nuclear_transfer

    The process of somatic cell nuclear transfer involves two different cells. The first being a female gamete, known as the ovum (egg/oocyte). In human SCNT experiments, these eggs are obtained through consenting donors, utilizing ovarian stimulation. The second being a somatic cell, referring to the cells of the human body.

  7. Human embryonic development - Wikipedia

    en.wikipedia.org/wiki/Human_embryonic_development

    This process is called zona hatching and it takes place on the sixth day of embryo development, immediately before the implantation process. The hatching of the human embryo is supported by proteases secreted by the cells of the blastocyst, which digest proteins of the zona pellucida, giving rise to a hole.

  8. Fragmentation (reproduction) - Wikipedia

    en.wikipedia.org/wiki/Fragmentation_(reproduction)

    Before splitting, the animal may develop furrows at the zone of splitting. The headless fragment must regenerate a completely new head. In 'paratomy', the split occurs perpendicular to the antero-posterior axis and the split is preceded by the "pregeneration" of the anterior structures in the posterior portion. The two organisms have their body ...

  9. Cell division - Wikipedia

    en.wikipedia.org/wiki/Cell_division

    Interphase is the process through which a cell must go before mitosis, meiosis, and cytokinesis. [15] Interphase consists of three main phases: G 1, S, and G 2. G 1 is a time of growth for the cell where specialized cellular functions occur in order to prepare the cell for DNA replication. [16]