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Table 2.
Summary of Meiosis Concept Inventory (MCI) pre- and post-assessment item means across both sections.
MCI ItemConcept AddressedBloom's LevelPre Score AveragePost Score Averaget Ratiopdf
Ploidy II 0.50 0.31 2.74955 0.0074** 81 
Ploidy, what “counts” as a chromosome III 0.16 0.33 2.99322 0.0037** 81 
Ploidy III 0.04 0.05 0.37598 0.7079 81 
13 Changes in the amount of DNA in a cell in relation to timing of events in meiosis II 0.29 0.35 0.896956 0.3724 81 
14 Timing of events in the cell cycle and meiosis in relation to chromosomes/chromatids 0.42 0.59 3.093982 0.0027** 81 
15 Timing of events (segregation of sister chromatids); consequences of crossing over II 0.33 0.49 1.834277 0.0703 81 
16 Timing of events (segregation of sister chromatids); consequences of crossing over II 0.23 0.70 7.024216 <0.0001*** 81 
17 Gamete formation, segregation of alleles and chromosomes IV 0.341 0.628 4.135866 <0.0001*** 81 
MCI ItemConcept AddressedBloom's LevelPre Score AveragePost Score Averaget Ratiopdf
Ploidy II 0.50 0.31 2.74955 0.0074** 81 
Ploidy, what “counts” as a chromosome III 0.16 0.33 2.99322 0.0037** 81 
Ploidy III 0.04 0.05 0.37598 0.7079 81 
13 Changes in the amount of DNA in a cell in relation to timing of events in meiosis II 0.29 0.35 0.896956 0.3724 81 
14 Timing of events in the cell cycle and meiosis in relation to chromosomes/chromatids 0.42 0.59 3.093982 0.0027** 81 
15 Timing of events (segregation of sister chromatids); consequences of crossing over II 0.33 0.49 1.834277 0.0703 81 
16 Timing of events (segregation of sister chromatids); consequences of crossing over II 0.23 0.70 7.024216 <0.0001*** 81 
17 Gamete formation, segregation of alleles and chromosomes IV 0.341 0.628 4.135866 <0.0001*** 81 

Notes: A single asterisk (*) indicates significance at the p < 0.05 level, two asterisks (**) indicate significance at the p < 0.01 level, three asterisks (***) indicate significance at the p < 0.001 level. Concept(s) addressed and Bloom's level as reported in Kalas et al. (2013).

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