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A CHROMOSOMAL TRANSLOCATION IN SORDARIA FIMICOLA AND IRREGULAR SEGREGATION OF CHROMOSOMES
Author(s) -
COX B. S.,
GILL J. J. B.
Publication year - 1967
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1967.tb05436.x
Subject(s) - tetrad , spore , biology , chromosomal translocation , meiosis , chromosome , genetics , botany , gene
S ummary A strain of Sordaria fimicola has been isolated which has normal black spores with 98% viability, but which, when crossed with wild‐type Sordaria , gives rise to aborted spores in the majority of asci in hybrid perithecia. The pattern of spore abortion is consistent with the hypothesis that the abnormal strain contains a reciprocal translocation and this is supported by the cytological data and also by tetrad analysis data. Consideration of a few exceptions in the tetrad analysis and in the chromosome preparations suggests that irregular segregation following a failure of pairing may sometimes occur at meiosis.