Mitosis and Meiosis by Guzman https://padlet.com/wguzman1/celldivision3 Made with a curious mind en-us 2017-11-16 17:37:16 UTC 2025-11-12 13:31:44 UTC hello@padlet.com Part 1: Onion Root tip #1 wguzman1 https://padlet.com/wguzman1/celldivision3/wish/220621033 2018-01-11 15:21:30 UTC https://padlet.com/wguzman1/celldivision3/wish/220621033 Part 2: Meiosis Questions wguzman1 https://padlet.com/wguzman1/celldivision3/wish/220626529 The hallmark of sexual reproduction is the great diversity seen in the gametes and in the offspring. Meiosis is integral to sexual reproduction because this type of cell division produces the sex cells, gametes.  Follow the link , https://www.cellsalive.com/meiosis.htm, and then Answer the following questions.
1. How do sexually reproducing organisms produce gametes from diploid progenitors?
2. How does the process increase gamete diversity?
3. What are the outcomes from independant assortment and crossing over?
4. Are homologous chromosomes exact copies of each other?
5. What is crossing over?
6. What is meant by indepdendent assortment?
7. What happens if a homologous pair of chromosomes fails to separate, and how might this contribute to genetic disorders such as Down syndrome and cri du chat syndrome?
8. How are mitosis and meiosis fundamentally different?]]> 2018-01-11 15:30:41 UTC https://padlet.com/wguzman1/celldivision3/wish/220626529 Part 1: Counting cells wguzman1 https://padlet.com/wguzman1/celldivision3/wish/220697920 Scientists reported that a fungal pathogen may negatively affect the growth of soybeans (Gycine max). Soybean growth decreased during three years of high rainfall, and the soybean roots were poorly developed. Close relatives if R. anaerobis are plant pathogens and grow in the soil. a lectin-like protein was found in the soil around the soybean roots. This protein may have been secreted by the fungus. Lectins induce mitosis in some root apical meristem tissues. In many instances, rapid cell divisions weaken plant tissues. 
You have been asked to investigate whether the fungal pathogen lectin affects the number of cells undergoing mitosis in a different plant, using root tips. 
Answer the following questions about experimental design. 
1. What is your experimental hypothesis? your null hypothesis? Are these the same?
2. How would you design an experiment with onion bulbs to test whether lectins increase the number of cells in mitosis?
3. What would you measure, and how would you measure it?
4. What would be an approporiate control for your experiment]]> 2018-01-11 17:38:10 UTC https://padlet.com/wguzman1/celldivision3/wish/220697920 Part 1: Procedure wguzman1 https://padlet.com/wguzman1/celldivision3/wish/220701704 1. Observe the images for Onion root tip cells #1, #2, and treated. The treated cell was exposed to lectin. 
2. Count the number of cells in Interphase and mitosis for all cells. 
Complete Data Table #1 for the onion root tip cells.
3. Calculate the percentage of cells in each phase.
4. Answer the following questions
  • Was there a significant difference between the two groups, untreated and treated?
  • Did the fungal pathogen increase the number of cells in mitosis?
  • What other experiment should you perform to verify your findings?
 
]]> 2018-01-11 17:44:40 UTC https://padlet.com/wguzman1/celldivision3/wish/220701704 Part 1: Onion Root tip #2 wguzman1 https://padlet.com/wguzman1/celldivision3/wish/220844661 2018-01-12 02:57:24 UTC https://padlet.com/wguzman1/celldivision3/wish/220844661 Part 1: Onion Root tip, treated wguzman1 https://padlet.com/wguzman1/celldivision3/wish/220845818 2018-01-12 03:08:32 UTC https://padlet.com/wguzman1/celldivision3/wish/220845818 Florentina Onolfo, Isabel Teran, Hayley Kopf onolfoflorentina https://padlet.com/wguzman1/celldivision3/wish/221005436 2018-01-12 15:32:42 UTC https://padlet.com/wguzman1/celldivision3/wish/221005436 Lucas Prodromou, Gianfranco Ide, Joseph Latoni lucaswazhere1010 https://padlet.com/wguzman1/celldivision3/wish/221005826 2018-01-12 15:33:34 UTC https://padlet.com/wguzman1/celldivision3/wish/221005826 Becca Sands and Max Balan https://padlet.com/wguzman1/celldivision3/wish/221036421 2018-01-12 16:37:28 UTC https://padlet.com/wguzman1/celldivision3/wish/221036421 Sean, Skylar, Hugo, Nahuel https://padlet.com/wguzman1/celldivision3/wish/222067903 2018-01-17 14:18:43 UTC https://padlet.com/wguzman1/celldivision3/wish/222067903 Chloe Boudin, Ailan Feldner, Ema Peck cbagghera https://padlet.com/wguzman1/celldivision3/wish/222072009 2018-01-17 14:28:38 UTC https://padlet.com/wguzman1/celldivision3/wish/222072009 Leah Chepenik and Rachel Edelstein leahchepenik https://padlet.com/wguzman1/celldivision3/wish/222082679 2018-01-17 14:52:07 UTC https://padlet.com/wguzman1/celldivision3/wish/222082679 Taylor Mayer and Emily Brafman taylormayerr3 https://padlet.com/wguzman1/celldivision3/wish/222083895 2018-01-17 14:54:49 UTC https://padlet.com/wguzman1/celldivision3/wish/222083895 Harry Tamis and Toby Squire Part 2 harrytamis81 https://padlet.com/wguzman1/celldivision3/wish/222084694 2018-01-17 14:56:23 UTC https://padlet.com/wguzman1/celldivision3/wish/222084694 Harry Tamis and Toby Squire part 1 https://padlet.com/wguzman1/celldivision3/wish/222084874 2018-01-17 14:56:44 UTC https://padlet.com/wguzman1/celldivision3/wish/222084874 Cristyn Rodriguez, Coral Murray, Juan Milisenda, Glenda Jurado nicolecullin https://padlet.com/wguzman1/celldivision3/wish/222085333 Both Part 1 & Part 2]]> 2018-01-17 14:57:33 UTC https://padlet.com/wguzman1/celldivision3/wish/222085333 Lee and Nicky leedilena https://padlet.com/wguzman1/celldivision3/wish/222086109 2018-01-17 14:59:14 UTC https://padlet.com/wguzman1/celldivision3/wish/222086109 kaylasomoano110 https://padlet.com/wguzman1/celldivision3/wish/222386750 2018-01-18 12:24:02 UTC https://padlet.com/wguzman1/celldivision3/wish/222386750 Aisha Galdo and Max James aisha53236 https://padlet.com/wguzman1/celldivision3/wish/222509396 2018-01-18 16:48:58 UTC https://padlet.com/wguzman1/celldivision3/wish/222509396 Kathy Palacios and Danyella Morg danyellamorgan https://padlet.com/wguzman1/celldivision3/wish/222746129 2018-01-19 12:25:12 UTC https://padlet.com/wguzman1/celldivision3/wish/222746129 Ashly Mendoza and Ariana Beingolea arianabeingolea https://padlet.com/wguzman1/celldivision3/wish/222895672 2018-01-19 18:22:09 UTC https://padlet.com/wguzman1/celldivision3/wish/222895672 https://padlet.com/wguzman1/celldivision3/wish/222969938 2018-01-19 23:08:20 UTC https://padlet.com/wguzman1/celldivision3/wish/222969938 Zachary Matz https://padlet.com/wguzman1/celldivision3/wish/225425694 2018-01-28 19:48:35 UTC https://padlet.com/wguzman1/celldivision3/wish/225425694