A DNA segment contains three reporter genes (red, yellow, cy…
A DNA segment contains three reporter genes (red, yellow, cyan), each flanked by unique, non-cross-reactive LoxP sites (black, gray, white). When Cre recombinase is activated, it randomly recombines matching LoxP sites, removing the intervening DNA. Based on this setup, determine for each of the following reporter gene combinations whether it could result (A) or could not result (B) from a single or series of such recombination events. Ignore the possibility of excised DNA reintegrating. Combination Can it occur? Red and yellow Red and cyan Yellow and cyan Cyan only Yellow only Red only
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