Karyotypes of S and L type rotifers Brachionus plicatilis O. F. Müller
Cytological differences between two morphotypes of the rotifer, Brachionus plicatilis, were investigated. Mitotic chromosomes of cells of the S and L types were obtained. The two species differed in chromosome number and morphology: the female diploid embryo of the S type had 25 chromosomes, while t...
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Veröffentlicht in: | Journal of experimental marine biology and ecology 1991-12, Vol.154 (2), p.171-176 |
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description | Cytological differences between two morphotypes of the rotifer, Brachionus plicatilis, were investigated. Mitotic chromosomes of cells of the S and L types were obtained. The two species differed in chromosome number and morphology: the female diploid embryo of the S type had 25 chromosomes, while the L type exhibited 22 chromosomes. As far as the karyotypes indicate, the rotifers should be considered different species. Evolutionary processes of their morphological evolution are discussed. |
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Müller</title><title>Journal of experimental marine biology and ecology</title><description>Cytological differences between two morphotypes of the rotifer, Brachionus plicatilis, were investigated. Mitotic chromosomes of cells of the S and L types were obtained. The two species differed in chromosome number and morphology: the female diploid embryo of the S type had 25 chromosomes, while the L type exhibited 22 chromosomes. As far as the karyotypes indicate, the rotifers should be considered different species. Evolutionary processes of their morphological evolution are discussed.</description><subject>Animals</subject><subject>Biological and medical sciences</subject><subject>Classical genetics, quantitative genetics, hybrids</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Genetics of eukaryotes. 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Müller</atitle><jtitle>Journal of experimental marine biology and ecology</jtitle><date>1991-12-10</date><risdate>1991</risdate><volume>154</volume><issue>2</issue><spage>171</spage><epage>176</epage><pages>171-176</pages><issn>0022-0981</issn><eissn>1879-1697</eissn><coden>JEMBAM</coden><abstract>Cytological differences between two morphotypes of the rotifer, Brachionus plicatilis, were investigated. Mitotic chromosomes of cells of the S and L types were obtained. The two species differed in chromosome number and morphology: the female diploid embryo of the S type had 25 chromosomes, while the L type exhibited 22 chromosomes. As far as the karyotypes indicate, the rotifers should be considered different species. Evolutionary processes of their morphological evolution are discussed.</abstract><cop>Amsterdam</cop><pub>Elsevier Science</pub><tpages>6</tpages></addata></record> |
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subjects | Animals Biological and medical sciences Classical genetics, quantitative genetics, hybrids Fundamental and applied biological sciences. Psychology Genetics of eukaryotes. Biological and molecular evolution Invertebrata |
title | Karyotypes of S and L type rotifers Brachionus plicatilis O. F. Müller |
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