Development Time and Cell Numbers

A 4D movie (3D plus time) that contains time lapse images of embryogenesis provides you opportunities to ask questions that cannot be asked with a 3D movie alone. These questions might include, "What's the relationship between the developmental time and cell numbers?"; "Is it linear or...?"; Also, "is this relationship different among wild-type and mutant embryos?"

Remember the NIH image program? You can also use it to play with the movies you are going to download. However, you need to have ideas about what you would like to use the software for.

Wild Type (about 23 MB)
Cell Number*
1
2
4
8
24
100
180
350
550
558
Approximate Time for Development (minutes)
0
30 ~ 40
50 ~ 55
60 ~ 70
90
150
200
260
350
800

* Cell numbers counted until the worm hatched.

For WT, the data about the relationship between cell number and developmental time are from textbooks Click on the "Wild Type" link above to see the embryogenesis process. Pay attention to the upper left corner to see the actual time lapse for this wild type embryo. Also as the WT worm embryo you saw on the main page doesn't have time lapse, here we use a different wild type embryo from the one on the main page.

Mutant 1 and Mutant 2 (about 5 MB each)
Cell Number
Development was arrested at one cell.
Approximate Time for Development (minutes)
Recorded for about an hour.

 

Mutant 3 and Mutant 4 (about 2 MB and 4 MB)
Cell Number *

Cell development was halted.

Approximate Time for Development (minutes)
Recorded for about one hour.

* for these types of mutants, one cell division might produce 3, 4 or 5 cells

PreviewAttachmentSize
wtTime.mov22.96 MB