When it comes to "gene doping" in performance horses it is expected to be somewhat challenging to detect. Regarding detection what were some of the concepts discussed in class?

Trans$-$genes used for doping will likely be easier to identify than the potential gene products because trans$-$genes lack the intron regions present within endogenous DNA.

Trans$-$gene products used for doping will likely be easier to identify than the potential trans$-$gene because they will be tagged and therefore different than their endogenous counterparts.

Trans$-$genes used for doping will likely be easier to identify than endogenous genes because endogenous genes have intron regions while transgenes only have exon regions.

None of the above.