BIO120 Unit 4 Assignment by Jalissa Mixon https://padlet.com/moveslikejalissa/56796mfn9gxhvwp0 Created By Jalissa Mixon en-us 2022-02-06 19:20:16 UTC 2022-02-07 01:40:19 UTC hello@padlet.com moveslikejalissa https://padlet.com/moveslikejalissa/56796mfn9gxhvwp0/wish/2031864989 2022-02-06 21:43:24 UTC https://padlet.com/moveslikejalissa/56796mfn9gxhvwp0/wish/2031864989 Meiosis 1 moveslikejalissa https://padlet.com/moveslikejalissa/56796mfn9gxhvwp0/wish/2031947688 The first round of meiotic cell division; referred to as reduction division because the resulting cells are haploid (Fowler & Others 2021).

During prophase 1, a lot of important things happen
Prophase
  • The DNA will begin to shrink into chromosomes.
  • The duplicated chromatids will then join at the centromere and will continue to stay connected all the way through Meiosis 1. 
  • Synapsis also takes place in the prophase 1
    • Synapsis is the formation of a close association between homologous chromosomes during prophase 1 (Fowler & Others, 2021).
  • Crossing over stage
    • The homologous chromosomes will then line up with each other, thus forming tetrads 
  • The nuclear membrane then breaks itself down
  • The two centrosomes will then move to the opposite poles in the cell
Metaphase 1
  • The synapsis chromosomes will begin to move to the middle of the cell 
Anaphase 1 
  • The homologous chromosomes split and separate, moving to the poles of the cells 
Telophase1
  • The cells are ready to divide into two daughter cell
]]> 2022-02-06 23:56:28 UTC https://padlet.com/moveslikejalissa/56796mfn9gxhvwp0/wish/2031947688 Meiosis 2 moveslikejalissa https://padlet.com/moveslikejalissa/56796mfn9gxhvwp0/wish/2031953574 The second round of meiotic cell division following meiosis 1; sister chromatids are separated from each other the result is four unique haploid cells (Fowler & Others, 2021).

Prophase 2 
  • Chromatin start to form into noticeable chromosomes
  • Spindle fibers with to appear in this phase
Metaphase 2 
  • These spindle fibers will now connect to the kinetochore from each sister chromatid
Anaphase 2 
  • Spindle fibers will connect to each of the sister chromatids
  • This will move each chromatid to each pole of the cell 
Telophase 2 
  • The sister chromosomes reach the opposite poles
  • Results in 4 unique haploid cells that only have 1 copy of each chromosome.
]]> 2022-02-07 00:03:00 UTC https://padlet.com/moveslikejalissa/56796mfn9gxhvwp0/wish/2031953574 moveslikejalissa https://padlet.com/moveslikejalissa/56796mfn9gxhvwp0/wish/2031968115 2022-02-07 00:19:59 UTC https://padlet.com/moveslikejalissa/56796mfn9gxhvwp0/wish/2031968115 Steps of Mitosis moveslikejalissa https://padlet.com/moveslikejalissa/56796mfn9gxhvwp0/wish/2031975416 2022-02-07 00:27:26 UTC https://padlet.com/moveslikejalissa/56796mfn9gxhvwp0/wish/2031975416 moveslikejalissa https://padlet.com/moveslikejalissa/56796mfn9gxhvwp0/wish/2031981280
Fowler, S., Roush, R. & Wise, J. (2021, January 12). Concepts of biology. OpenStax College,  
https://openstax.org/details/books/concepts-biology 

Sapkota, A. (2020, June 1) Meiosis- definition, purpose, stages, application with diagram. Retrieved from 
https://microbenotes.com/meiosis/

Sapkota, A. (2021, May 30) Mitosis- definition, purpose, stages, applications with diagram. Retrieved from 
https://microbenotes.com/mitosis/

]]> 2022-02-07 00:32:57 UTC https://padlet.com/moveslikejalissa/56796mfn9gxhvwp0/wish/2031981280 Steps of Meiosis moveslikejalissa https://padlet.com/moveslikejalissa/56796mfn9gxhvwp0/wish/2031988859 2022-02-07 00:39:44 UTC https://padlet.com/moveslikejalissa/56796mfn9gxhvwp0/wish/2031988859 moveslikejalissa https://padlet.com/moveslikejalissa/56796mfn9gxhvwp0/wish/2032008541 Interphase 
  • The chromosomes duplicate and form two identical chromatids, that join together at the centromere
Prophase 
  • While in the nucleus, the chromosomes will shrink
  •  In the cytoplasm, the spindle fibers will begin to form 
Metaphase
  • The nuclear membrane starts to break apart
  • Spindle fibers will then attach to the chromosomes and move to the center of the cell
Anaphase 
  • The spindle fibers will begin to shrink
  • And the centromere will divide itself
    • Which will then turn the chromosomes into chromatids 
Telophase
  • The nuclear membrane forms around each set of chromosomes 
  • Chromosomes will move spread out in their new nucleus
  • Spindle fibers break down 
Cytokinesis
  • Cell membrane then breaks into two, leaving two separate sets of chromatids 
  • Turing into to two identical daughter cells 
]]> 2022-02-07 00:56:32 UTC https://padlet.com/moveslikejalissa/56796mfn9gxhvwp0/wish/2032008541 moveslikejalissa https://padlet.com/moveslikejalissa/56796mfn9gxhvwp0/wish/2032036248 2022-02-07 01:20:18 UTC https://padlet.com/moveslikejalissa/56796mfn9gxhvwp0/wish/2032036248 moveslikejalissa https://padlet.com/moveslikejalissa/56796mfn9gxhvwp0/wish/2032041907 Now, during the gamete formation, there are different pairs of alleles that will segregate from each other independently. ]]> 2022-02-07 01:24:58 UTC https://padlet.com/moveslikejalissa/56796mfn9gxhvwp0/wish/2032041907 Information on Meiosis moveslikejalissa https://padlet.com/moveslikejalissa/56796mfn9gxhvwp0/wish/2032053273 Meiosis consists of one round of chromosome duplication and two rounds of nuclear division (Fowler & Others 2021).]]> 2022-02-07 01:35:25 UTC https://padlet.com/moveslikejalissa/56796mfn9gxhvwp0/wish/2032053273 What is Mitosis? moveslikejalissa https://padlet.com/moveslikejalissa/56796mfn9gxhvwp0/wish/2032058213 The period of the cell cycle at which the duplicated chromosomes are separated into identical nuclei; includes prophase, prometaphase, metaphase, anaphase, and telophase (Fowler & Others, 2021). ]]> 2022-02-07 01:40:06 UTC https://padlet.com/moveslikejalissa/56796mfn9gxhvwp0/wish/2032058213