NR_CH_mitosis

1 collaborator

Cindy Huang (Author)

WHAT IS IT?

This model demonstrates the process of the chromosomes of a cell undergoing mitosis from prophase to anaphase.

HOW IT WORKS

We set up all the turtles (six v-shaped and two dots) to face a certain direction so that it moves in that direction once we tell them to go forward. The v shaped turtles represent chromosomes, the links represent spindle fibers, and the dots are the centrosomes. We made the links black in the setup so that them remain invisible until we use the go button, where we changed the color of the links to white.

HOW TO USE IT

Click setup, drag the speed slider far into the left side, and hit go once.

THINGS TO NOTICE

In a cell, the chromosomes split simultaneously. Due to limitations of this model and our coding abilities, the chromosomes split one at a time.

Comments and Questions

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Click to Run Model

to setup
  clear-all
  create-turtles 8
   [
     set size 4
     ask turtle 0 [
        set color red
        set shape "x"
        setxy -4 0
        facexy -4 16
  ]
     ask turtle 1 [
        set color red
        set shape "x"
        setxy 4 0
        facexy 4 -16
  ]
     ask turtle 2 [
        set color red
        set shape "x"
        setxy -4 0
        facexy -4 -16
  ]
     ask turtle 3 [
        set color red
        set shape "x"
        setxy 4 0
        facexy 4 16
  ]
     ask turtle 4 [
        set color red
        set shape "x"
        setxy 0 0
        facexy 0 16
  ]
     ask turtle 5 [
        set color red
        set shape "x"
        setxy 0 0
        facexy 0 -16
  ]
      ask turtle 6 [
        setxy 0 14
        facexy 0 16
        set color blue
        set shape "dot"
  ]
      ask turtle 7 [
        setxy 0 -14
        facexy 0 -16
        set color blue
        set shape "dot"
  ]
      ask turtle 0 [create-link-with turtle 7]
      ask turtle 1 [create-link-with turtle 6]
      ask turtle 2 [create-link-with turtle 6]
      ask turtle 3 [create-link-with turtle 7]
      ask turtle 4 [create-link-with turtle 7]
      ask turtle 5 [create-link-with turtle 6]
      ask link 0 7 [ set color black ]
      ask link 1 6 [ set color black ]
      ask link 2 6 [ set color black ]
      ask link 3 7 [ set color black ]
      ask link 4 7 [ set color black ]
      ask link 5 6 [ set color black ]
   ]
  reset-ticks
end 

to go
 ask link 0 7 [ set color white ]
 ask link 1 6 [ set color white ]
 ask link 2 6 [ set color white ]
 ask link 3 7 [ set color white ]
 ask link 4 7 [ set color white ]
 ask link 5 6 [ set color white ]
 ask turtles with [color = red] [
  fd -8
  ]
 tick
end

There is only one version of this model, created almost 4 years ago by Cindy Huang.

Attached files

File	Type	Description	Last updated
NR_CH_mitosis.png	preview	Preview for 'NR_CH_mitosis'	almost 4 years ago, by Cindy Huang	Download

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