Transcription of the developmental gene M is influenced by two different proteins: B and H. Studies of single and double mutants generated the following information: In mutants lacking B, transcription of M does occur In mutants lacking H, transcription of M does not occur. In double mutants lacking B and H, transcription of M does not occur. Based on this information, put these genes in order in a developmental pathway. Use arrows and t-bars between the genes as appropriate. Choose the correct identity of each box below. Gene 1 1st Symbol Gene 2 2nd Symbol OutcomeH ? arrow B ? arrow M transcribed B —I t-bar H —I t-bar