Attach a photo of your dish of tobacco seedlings here.

Based on your calculated chi square value, what is your conclusion about the deviation you saw in your experimental results? Type A or B for your answer. (A) I conclude that the deviation most likely occurred simply by chance. (B) I conclude that something other than chance most likely caused the deviation.

Attach a photo of your Results Table from page 98 here.

Which of the following tissues would you expect to have the highest mitotic index?

In what stage of the cell cycle were the majority of cells you counted?

How many hours were the cells spending in anaphase? (Type just a number, rounded to one decimal place, such as 10.4).

How many hours were the cells spending in metaphase? (Type just a number, rounded to one decimal place, such as 10.4).

What is the mitotic index for the cells in Sample 2? (Type just a number, rounded to two decimal places, such as 20.45).

Suppose a chemical company is testing a plant hormone that it believes will increase the growth rate of onions. Suppose you are able to view slides of onion root tips that have been treated with the hormone. If the hormone is successful, how do you think the counts of cells in various stages would differ from the counts you made, if there was still a total of 67 cells visible, like on the photo you used for your counts?

During which stage of the cell cycle do chromosomes replicate?