For example, a trait-by-trait analysis often shows that QTLs for two different traits are in very similar locations but have different parents contributing favourable alleles.
(QTLs for two different traits; have; different parents contributing favourable alleles) (different parents; contributing; favourable alleles) (a trait-by-trait analysis; shows; that QTLs for two different traits are in very similar locations but have different parents; T:often) Context(a trait - by - trait analysis shows,List([13, 50))):(QTLs for two different traits; are; in very similar locations)
a trait - by - trait analysis shows,List([13, 50))
QTLs for two different traits different parents a trait-by-trait analysis QTLs for two different traits
have contributing shows are
different parents contributing favourable alleles
favourable alleles
that QTLs for two different traits are in very similar locations but have different parents T:often
in very similar locations