Teaching a new dog old tricks: identifying quantitative trait loci using lessons from plants.
J Hered
; 90(1): 43-51, 1999.
Article
in En
| MEDLINE
| ID: mdl-9987902
ABSTRACT
Locating quantitative trait loci (QTL) in mammalian systems has proven difficult due to the lack of genetic control and reproducibility, as well as the expense of maintaining sufficiently large populations for genotyping and phenotyping. In plants, populations of recombinant inbred lines (progeny bred to homozygosity from a single cross) do not have these problems. Methods developed to identify QTL in a recombinant inbred soybean population provide a basis for analysis of a suitable mammalian population, such as Portuguese water dogs in the United States. The more than 6,000 dogs have accurate pedigrees, available phenotypic data and samples for genotyping, as well as interesting quantitative trait variation. The computer program Georgie allows us to choose large subpopulations with desirable characteristics such as high degrees of consanguinity that capture some of the benefits of recombinant inbred lines in plants. Computer simulations extending methods developed for simpler plant populations indicate that QTL with realistic effects can be identified from such subpopulations. Currently we are developing markers and collecting phenotypic and genotypic data from this population to begin the process of unraveling the genetic basis of quantitative traits in dogs.
Search on Google
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Glycine max
/
Quantitative Trait, Heritable
/
Dogs
Type of study:
Prognostic_studies
Limits:
Animals
Language:
En
Journal:
J Hered
Year:
1999
Document type:
Article
Affiliation country:
Estados Unidos