Ques%on… •  Ques%on: A,er viewing a slide of an onion root %p, which stage of mitosis will be the longest stage for an onion root %p? Which stage of mitosis will be the shortest stage for an onion root %p? •  Hypothesis: “ The ___ stage of mitosis is the longest stage for an onion root %p. The ___ stage of mitosis is the short stage for an onion root %p.” Pollard’s Results Number of cells 30 25 20 25 15 10 5 0 Number of cells 11 3 1 1 Pollard’s Results % of .me in stages of Mitosis 3% 2% 7% Interphase Prophase Metaphase 27% 61% Anaphase Telophase CER – Onion Root Tip •  Claim – State whether the data proved or disproved the hypothesis. –  “The data supports/disproves the hypothesis that states the ___ phase is the longest stage and the ___ phase is the shortest stage of mitosis for an onion root %p. •  Evidence – State the data in sentence format. –  “The data shows the cell is in the __ stage for __% and the cell is in the ____stage for ___%. No emotion. No pronouns.
Complete sentences
•  Reasoning – Discuss why the results occurred using scien%fic reasoning. –  Which stage is the longest? Which stage is the shortest? –  Give an explana%on of WHY these stages have this %me period. Discuss what occurs in each stage to support the explana%on. –  Would these results hold true for all types of cells for the onion? Why or why not? Discuss the purpose of other cells to support the explana%on. –  List two reasons the audience need to know this informa%on as it pertains to human cells.