DESCRIPTION:

QTL associated with early growth QTL 5. This interval was obtained by using a fixed interval width of 25 Mbp around the peak marker (41935172)

LABEL:

QTL-Egq5-Mouse-Chr 17

SCORE TYPE:

Binary

DATE ADDED:

2012-04-02

DATE UPDATED:

2020-05-06

SPECIES:

URI:

http://www.informatics.jax.org/searches/accession_report.cgi?id=MGI:3527652

AUTHORS:

Rocha JL, Eisen EJ, Van Vleck LD, Pomp D

TITLE:

A large-sample QTL study in mice: I. Growth.

JOURNAL:

Mammalian genome : official journal of the International Mammalian Genome Society Feb 2004, Vol 15, pp. 83-99

ABSTRACT:

By use of long-term selection lines for high and low growth, a large-sample (n = approximately 1,000 F2) experiment was conducted in mice to further understand the genetic architecture of complex polygenic traits. In combination with previous work, we conclude that QTL analysis has reinforced classic polygenic paradigms put in place prior to molecular analysis. Composite interval mapping revealed large numbers of QTL for growth traits with an exponential distribution of magnitudes of effects and validated theoretical expectations regarding gene action. Of particular significance, large effects were detected on Chromosome (Chr) 2. Regions on Chrs 1, 3, 6, 10, 11, and 17 also harbor loci with significant contributions to phenotypic variation for growth. Despite the large sample size, average confidence intervals of approximately 20 cM exhibit the poor resolution for initial estimates of QTL location. Analysis with genome-wide and chromosomal polygenic models revealed that, under certain assumptions, large fractions of the genome may contribute little to phenotypic variation for growth. Only a few epistatic interactions among detected QTL, little statistical support for gender-specific QTL, and significant age effects on genetic architecture were other primary observations from this study. PUBMED: 15058380
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