Cytogenetics of bisexual/unisexual species ofPoecilia
作者:
L. Sola,
AR. Rossi,
V. Iaselli,
EM. Rasch,
PJ. Monaco,
期刊:
Cytogenetic and Genome Research
(Karger Available online 1992)
卷期:
Volume 60,
issue 3-4
页码: 229-235
ISSN:1424-8581
年代: 1992
DOI:10.1159/000133346
出版商: S. Karger AG
数据来源: Karger
摘要:
Chromosomes of Poecilia mexicana mexicana, one of the bisexual species involved in the hybrid origin of the unisexual teleost fish species P. formosa, were analyzed by several staining techniques. Sex-specific, differential heterochromatin, found in other congeneric species, was not observed in P. m. mexicana. Nucleolar organizer regions were polymorphic among individual specimens within a given population sample. A single specimen exhibiting intraindividual variability of chromosome pair 1 and a specimen with a triploid karyotype are also described.
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