| | 20255-4-2 (Site not responding. Last check: 2007-10-31) |
 | | SUMMARY - A chromosomal mosaic has at least two cell lineages with different karyotypes derived from a single zygote and the karyotype alteration can be numeric or structural as well. |
 | | In the present paper it was detected a numeric chromosomal alteration in a single specimen of Thichomycterus paolence from the Quinta stream (Itatinga, state of São Paulo, Brazil). |
 | | In a total of 61 analysed metaphases, besides the normal chromosome number of this species (2n=54), other four chromosomal sets characterized by 2n=55 (54 plus a microchromosome), 2n=55 (54 plus a small subtelocentric chromosome), 2n=56 (54 plus a subtelocentric and a microchromosome) and 2n=57 (54 plus a subtelocentric pair and a microchromosome) have been detected. |
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