To Use a Backcross Mating Strategy for QTL Mapping

Multiple Choice

To use a backcross mating strategy for QTL mapping

A) two inbred parental strains that differ in a quantitative trait are crossed are mated.
B) the F₁ offspring are crossed with each other.
C) the F₂ offspring must contain chromosomes that are recombinant betweeen the markers and the genes involved in the trait
D) each parent should contain the same alleles at each QTL.