Lab 3 Mitosis and BIO201
L
Meiosis
Student Name
Access Code (located on the lid of your lab kit):
Lab Report Format Expectations
Utilize college level grammar and professional formaṄng when completing this worksheet.
Submissions without proper formaṄng, all required photos or sufficient responses will be rejected. Pre-
lab Questions
1. What are chromosomes made of?
Chromosomes are make of DNA and
proteins
2. Compare and contrast mitosis and meiosis, ensuring to detail the differences in both function
and in process. (Hint: Your response should be 4-5 sentences long.)
Miosis prouces two identical diploid cells for growth and repair, meiosis produces for unique
haploid cells for sexual reproduction. The function of mitosis focuses on growth, repair, and
asexual reproduction, where in meiosis it is for sexual reproduction, and producing gametes
(sperm, egg). The proces of mitosis is a round of division in four phases, where meiosis has
two rounds of divison.
3. Cancer is a disease related to uncontrolled cell division. Investigate two known causes for
these rapidly dividing cells and use this knowledge to invent a drug that would inhibit the
growth of cancer cells. (Hint: Your response should be 4-5 sentences long.)
Cancer is characterized by a mutation in the gene that causes abnormal cell growth and division.
Using a drug that would repair the genes and the DNA and supress tumor genes woul de ideal.
,Lab 3 Mitosis and BIO201
L
Meiosis
EXPERIMENT 1: OBSERVATION OF MITOSIS IN A PLANT CELL
Introduction Questions
1. State how you will calculate the number of hours each stage of mitosis takes based on
observations. Do so by either stating the “Hours of Stage” equation, or by discussing the
equation and its application. If you decide to insert an equation, you must use an
equation editor to properly state the equation with the correct symbols and fraction
format.
Hours of Stage = 24xnumber of cells in stage/total number of cells counted
2. In Table 1, below, predict how many hours of the 24-hour cell cycle you think each step
takes. Ensure you provide robust supporting evidence to back your prediction.
Table 1: Mitosis Predictions
Predictions Interphase will take 23 hours and mitosis will be the last hour
The cells are in interphase the longest amount of time
Supporting Evidence
, Lab 3 Mitosis and BIO201
L
Meiosis
Data and Observations
Record your observations in the table below. Based on those observations, calculate the percentage of
time spent in each phase of mitosis.
Table 2: Mitosis Data
Chosen Image Root tip 100x
Number of Cells in Calculated % of Time
Stage Total Number of Cells
Stage Spent in Stage
Interphase 24 27 89%
Prophase 1 27 3.75%
Metaphase 0 27 0
Anaphase 1 27 3.75%
Telophase 0 27 0
Cytokinesis 1 27 3.75%
L
Meiosis
Student Name
Access Code (located on the lid of your lab kit):
Lab Report Format Expectations
Utilize college level grammar and professional formaṄng when completing this worksheet.
Submissions without proper formaṄng, all required photos or sufficient responses will be rejected. Pre-
lab Questions
1. What are chromosomes made of?
Chromosomes are make of DNA and
proteins
2. Compare and contrast mitosis and meiosis, ensuring to detail the differences in both function
and in process. (Hint: Your response should be 4-5 sentences long.)
Miosis prouces two identical diploid cells for growth and repair, meiosis produces for unique
haploid cells for sexual reproduction. The function of mitosis focuses on growth, repair, and
asexual reproduction, where in meiosis it is for sexual reproduction, and producing gametes
(sperm, egg). The proces of mitosis is a round of division in four phases, where meiosis has
two rounds of divison.
3. Cancer is a disease related to uncontrolled cell division. Investigate two known causes for
these rapidly dividing cells and use this knowledge to invent a drug that would inhibit the
growth of cancer cells. (Hint: Your response should be 4-5 sentences long.)
Cancer is characterized by a mutation in the gene that causes abnormal cell growth and division.
Using a drug that would repair the genes and the DNA and supress tumor genes woul de ideal.
,Lab 3 Mitosis and BIO201
L
Meiosis
EXPERIMENT 1: OBSERVATION OF MITOSIS IN A PLANT CELL
Introduction Questions
1. State how you will calculate the number of hours each stage of mitosis takes based on
observations. Do so by either stating the “Hours of Stage” equation, or by discussing the
equation and its application. If you decide to insert an equation, you must use an
equation editor to properly state the equation with the correct symbols and fraction
format.
Hours of Stage = 24xnumber of cells in stage/total number of cells counted
2. In Table 1, below, predict how many hours of the 24-hour cell cycle you think each step
takes. Ensure you provide robust supporting evidence to back your prediction.
Table 1: Mitosis Predictions
Predictions Interphase will take 23 hours and mitosis will be the last hour
The cells are in interphase the longest amount of time
Supporting Evidence
, Lab 3 Mitosis and BIO201
L
Meiosis
Data and Observations
Record your observations in the table below. Based on those observations, calculate the percentage of
time spent in each phase of mitosis.
Table 2: Mitosis Data
Chosen Image Root tip 100x
Number of Cells in Calculated % of Time
Stage Total Number of Cells
Stage Spent in Stage
Interphase 24 27 89%
Prophase 1 27 3.75%
Metaphase 0 27 0
Anaphase 1 27 3.75%
Telophase 0 27 0
Cytokinesis 1 27 3.75%
