- THIS ARTICLE
- Full Text (PDF)
- Alert me when this article is cited
- Alert me if a correction is posted
- SERVICES
- Similar articles in this journal
- Similar articles in PubMed
- Alert me to new issues of the journal
- Download to citation manager
- Reprints & Permissions
- CITING ARTICLES
- Citing Articles via HighWire
- Citing Articles via Google Scholar
- GOOGLE SCHOLAR
- Articles by Marsden, J. E.
- Articles by May, B.
- Search for Related Content
- PUBMED
- PubMed Citation
- Articles by Marsden, J. E.
- Articles by May, B.
Single-Locus Inheritance in the Tetraploid Treefrog Hyla versicolor With an Analysis of Expected Progeny Ratios in Tetraploid Organisms
J. Ellen Marsden 1, Steven J. Schwager 2, and Bernie May 1
1 Section of Ecology and Systematics, Cornell University, Ithaca,
New York 14853
2 Biometrics Unit, Cornell University, Ithaca, New York 14853
The recently evolved autotetraploid frog, Hyla versicolor , was examined electrophoretically for evidence of genomic restructuring leading to diploidization. Loci were tested against the progeny ratios expected if inheritance was disomic vs. tetrasomic. Two loci (Mpi and Sod-2) appeared to be inherited tetrasomically, one (Mdh-2) appeared to be inherited disomically, and one (Tpi) appeared to be inherited disomically in one family and tetrasomically in another family, when tested conventionally against 1:2:1 and 1:4:1 segregation ratios. The minimum number of progeny required for this type of analysis for codominant alleles is shown to be 92. Progeny resulting from double reduction were observed, and the occurrence of a null allele class at Mpi was noted. A reexamination of expected progeny ratios in tetraploid organisms reveals that tetrasomic inheritance patterns cannot be predicted without adequate knowledge of the amount of crossing-over, the proportion of tetravalents vs. random bivalents that are formed, and the ratio and types of centromere segregation (alternate and adjacent) that occur from tetravalents in the species being studied. However, disomic inheritance can be unambiguously confirmed only by the production of all heteroallelic gametes from homobivalent, symmetrically heterozygous individuals. In addition, a method is described for estimating genecentromere distances using the ratio of progeny genotypes in certain crosses in tetraploid species.
Submitted on August 21, 1986Accepted on March 16, 1987
This article has been cited by other articles:
 |
|
 |
|
  M. Stift, C. Berenos, P. Kuperus, and P. H. van Tienderen Segregation Models for Disomic, Tetrasomic and Intermediate Inheritance in Tetraploids: A General Procedure Applied to Rorippa (Yellow Cress) Microsatellite Data Genetics, August 1, 2008; 179(4): 2113 - 2123. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 N. R. Espinoza and M. A. F. Noor Population Genetics of a Polyploid: Is There Hybridization Between Lineages of Hyla versicolor? J. Hered., March 1, 2002; 93(2): 81 - 85. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
R. Wu, M. Gallo-Meagher, R. C. Littell, and Z.-B. Zeng A General Polyploid Model for Analyzing Gene Segregation in Outcrossing Tetraploid Species Genetics, October 1, 2001; 159(2): 869 - 882. [Abstract] [Full Text] [PDF]
|
|