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Heterokaryon


heterokaryon
a cell having two or more genetically different nuclei
Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition. New York: Harper & Row ...
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A test for cytoplasmic organelle mutations (eg. mitochondrial or chloroplast mutations), based on new associations (recombination) of phenotypes in cells derived from genetically marked haploid heterokaryons.
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Heterokaryon
A multinuclcate cell containing nuclei of more than one genotype, such as are of widespread occurrence in fungi (Gk. heteros, different; karyon, nut, nucleus.)
Related Terms: Nucleus ...
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heterokaryons
.
Dikaryosis
is a significant genetic peculiarity of the fungi.
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In the Basidiomycota, the heterokaryon produces a new mycelium which may live for years without producing a fruiting body. The familiar mushrooms are examples of these.
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Nuclei move from one mycelium into the other, forming a heterokaryon (meaning "different nuclei"). This process is called plasmogamy. Actual fusion to form diploid nuclei is called karyogamy, and may not occur until sporangia are formed.
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CellServ provides four different types of kits: Visualization of Normal and Transformed Cells; Observation of Heterokaryons Through Cell Fusion; Effects of Toxic Chemicals on Cells; and Preparation of Human Chromosome Spreads.
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