Virtual Lab 7 Mitosis and Meiosis

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1 Name Period Assignment # Virtual Lab 7 Mitosis and Meiosis Click Next 1) What are 4 processes that require mitosis? a. b. c. d. 2) Define daughter cell 3) Define diploid 4) Define haploid 5) Define meiosis 6) Define gamete

2 7) Fill in the diagram below 8) What are 2 similarities between mitosis and meiosis? 9) What are 2 differences between mitosis and meiosis?

3 Click Next Concept 10) Define cell cycle 11) Fill in the diagram below Click A Closer Look 12) Define AND illustrate karyokinesis Click A Closer Look 13) Define AND illustrate interphase

4 Click A Closer Look 14) Define AND illustrate cytokinesis Click Next Concept 15) Define genome 16) Define homologous chromosomes 17) Define allele 18) Label the illustration below

5 Click Next 19) Fill in the diagram below

6 Click Next 20) Find and label a cell in interphase, prophase, metaphase, anaphase, and telophase in the micrograph below. When you click on a cell the program will tell you what phase you clicked on. Then you will have to cycle through to the video of mitosis and then click Back. The cell that is in metaphase will take you away from the site so just click back. Play video and then click Next 21) What is the average time an onion root tip cell takes to complete a cell cycle? 22) What is the equation for calculating the time for each phase of the cell cycle?

7 23) Record your data below. Show your work for EACH calculation in the space below next to the data table. Once you have completed the data table, click check answer and record correct answer on the data table. Click Self Quiz 24) Write the phase of mitosis depicted in the image below.

8 25) Write the phase of mitosis depicted in the image below. 26) Write the phase of mitosis depicted in the image below. 27) Write the phase of mitosis depicted in the image below. Click Next

9 28) Fill in the diagram below Click Next Concept

10 29) Define crossing over 30) What are the 2 sources of variation mentioned in the first paragraph on Crossing Over 31) Define synapsis 32) Fill in the illustration below Click Next 33) Where does fertilization occur in Sordarian fruiting bodies? 34) Fill in the diagram below

11 Click A Closer Look 35) Fill in the diagram below 36) How do you know when crossing over has occurred? Click Next 37) Label the diagram below

12 Click Next 38) Fill in the data table below. Show your calculations below on the right side of the table and then click Check Your Answers. Write the correct answers on the data table below your experimental results. 39) Define map unit 40) Define centromere

13 41) Show your work for the calculation of percent crossover below and then click Check Your Answers. Record the correct answer next to your calculation. 42) Why do you need to divide by 2 to accurately calculate the percent of crossing over? Click Next 43) In what cellular processes is mitosis involved? In what cellular processes is meiosis involved? 44) In what type of cells does mitosis occur? In what type of cells does meiosis occur? 45) How many times does DNA replicate in mitosis? How many times does DNA replicate in meiosis? 46) How many cellular divisions occur in mitosis? How many cellular divisions occur in meiosis? 47) How many daughter cells are formed by mitosis? How many daughter cells are formed by meiosis? 48) What is the chromosome number in daughter cells formed by mitosis from diploid parent cells? What is the chromosome number in daughter cells formed by meiosis from diploid parent cells? 49) In mitosis, are daughter cells identical to or different from parent cells? In meiosis, are daughter cells identical or different from parent cells?

14 50) In mitosis, when do synapsis and crossing over occur? In meiosis, when do synapsis and crossing over occur? Click Self Quiz 51) For question #1, write down the correct statement. 52) Explain why the statement above is correct 53) The cell cycle in a certain cell type has a duration of 16 hours. The nuclei of 660 cells showed 13 cells in anaphase. What is the approximate duration of anaphase in these cells? (Show your work) 54) Use the figure below to answer the following question. For an organism with a diploid number of 6, how are the chromosomes arranged during metaphase I of meiosis? 55) Explain your answer to the question above

15 56) Which sketch below shows the arrangement of chromosomes that you would expect to see in metaphase of mitosis for a cell with a diploid chromosome number of 6? 57) Explain your answer to the question above 58) A group of asci formed from crossing light-spored Sordaria with dark-spored produced the following results? How many of these asci contain a spore arrangement that resulted from crossing over? 59) Explain and illustrate your answer to the question above 60) From this small sample, calculate the map distance between the gene and centromere. 61) Explain your answer to the question above

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