CYTOGENETIC ANALYSIS OF PSEUDOLINKAGE OF LDH LOCI IN THE TELEOST GENUS SALVELINUS

Muriel Trask Davisson 1, James E. Wright 1, and Louisa M. Atherton 1

1 Department of Biology, The Pennsylvania State University, University Park, Pennsylvania 16802

Cytological and genetic analyses provide evidence that spontaneous centric fusion and fission can account for curious patterns of pseudolinkage of two LDH loci in males of brook trout (Salvelinus fontinalis) and in the F1, F2 and backcross generations of lake trout (S. namaycush) x brook trout hybrids. Intraindividual polymorphisms for acrocentric and metacentric chromosomes in somatic and gonadal tissue of these fish have been related to the proposed polyploid evolution in Salmonidae.

Submitted on August 2, 1972
Revised on December 2, 1972




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