L AB #4 H YPOTHESIS F ALSIFICATION U SING A C ERATOPTERIS RICHARDII D EVELOPMENTAL M UTANT A SSIGNMENT P ART O NE T ABLE 1 . G AMETOPHYTE COUNTS FOR TWO WT PETRI PLATE CULTURES OF C ERATOPTERIS RICHARDII . your plate partner’s plate # Hermaphrodites 34 20 # Males 4 8 Please ensure that you follow all formatting rules as detailed in the course manual. Use this document as a template to insert your answers, tables, and figures where appropriate. Submissions must be typed. You must respond in full, grammatically correct sentences in all cases. Edit your work carefully before submitting. 1. Which treatment tests Hypothesis #1? What is your reasoning? (2 marks) Treatment control orange tests hypothesis #1 since if the her1 mutant C-fern gametophytes do not respond to ACE, then when adding the WT filtrate to her1 gametophyte the result won’t be that male-only gametophytes are being produced, because if only male gametophytes are produced this would mean this hypothesis is wrong. 2. Which treatment tests Hypothesis #2? What is your reasoning? (2 marks) Treatment control purple tests hypothesis #2 since If the her1 mutant C-fern gametophytes do not secrete ACE, then when adding the her1 filtrate to WT gametophyte the result won’t be an increase in proportion above baseline of male-only gametophytes being produced, because if only male gametophytes are increasingly being produced when compared to baseline proportions then hypothesis #2 would be wrong. 3. The other four treatments are control treatments. Describe the factors that each of those four treatments can aid you to rule out in this experiment. (4 marks)