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Characteristic of Callus
The most important characteristic of callus from a functional view point is that abnormal growth has the potential to develop normal roots, shoots and embryoid that can form plants. Callus cultures become brown and necrotic if allowed to grow on the same medium for an extended period because of the depletion of essential nutrients, gradual desiccation of the agar due to water loss and accumulation of toxic metabolites in the medium the tissue may eventually die. The callus is cut into two or more pieces and transferred to a fresh medium. Such cultures are referred to as "sub-cultures". After a few subcultures some tissue systems do not require exogenous auxin for callus proliferation. Such cultures are said to have become 'habituated to auxin". However, this phenomenon is not a genetic change but a selective gene expression as habituated cultures are known to revert to auxin requirement with time.
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Planning the Nursing Care Monitor fluid intake and urinary output Administer drugs as advised/prescribed Monitor the child on dialysis Provide therapeutic diet
Chromatin is made of DNA molecules associated to proteins known as histones.
You ran both a body temperature and room temperature test for each enzyme you tested. Did the two temperatures seem to have an effect on the enzyme Exercise? Why or why not?
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Explain the Flower in diversity of life? In order for plants to evolve from an aquatic existence to a terrestrial existence, specific adaptations in their basic modes of reprod
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diagram of dna replication
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