| Embryonic Life_stage,
Cell number, Time and Morphology correlation table |
|
|
| (At 20 degree) |
|
|
| Cell Number |
Time (mins) |
Morphology |
| 1 |
-50 |
zygote |
| 2 |
0 |
first cleavage |
| 4 |
20 |
|
| 6 |
40 |
|
| 8 |
50 |
|
| 12 |
55 |
|
| 14 |
65 |
|
| 15 |
70 |
|
| 23 |
75 |
|
| 24 |
80 |
|
| 26 |
90 |
|
| 28 |
100 |
beginning gastrulation. gastrulation
begins Ea, Ep enters |
| 44 |
105 |
|
| 46 |
110 |
|
| 48 |
115 |
|
| 51 |
120 |
P4&Ms cells enter (ends 200 min) |
| 83 |
135 |
|
| 87 |
140 |
|
| 88 |
145 |
|
| 92 |
150 |
|
| 96 |
155 |
|
| 101 |
165 |
|
| 103 |
170 |
|
| 168 |
175 |
|
| |
180 |
C & D cells enter(ends 230 min) |
| 175 |
185 |
|
| 184 |
195 |
|
| 190 |
200 |
ends P4&M |
| 192 |
205 |
|
| 193 |
210 |
late gastrulation. AB derived
pharynx enter(ends 250 min) |
| 197 |
215 |
|
| 217 |
220 |
|
| 254 |
225 |
|
| 268 |
230 |
ventral cleft closes; ends C &D |
| 307 |
235 |
|
| 328 |
240 |
|
| 351 |
245 |
|
| 358 |
250 |
ends AB pharynx; |
| 359 |
255 |
|
| 357 |
260 |
|
| 366 |
265 |
|
| 368 |
270 |
|
| 374 |
275 |
|
| 380 |
280 |
|
| 397 |
285 |
|
| 421 |
290 |
ends ventral cleft closes |
| 458 |
295 |
|
| 471 |
300 |
|
| 490 |
305 |
|
| 508 |
310 |
|
| 519 |
315 |
|
| 529 |
320 |
|
| 547 |
325 |
|
| 556 |
330 |
|
| 564 |
335 |
|
| 559 |
340 |
|
| 558 |
345 |
|
| 560 |
350 |
|
| 560 |
355 |
|
| 564 |
360 |
|
| 567 |
365 |
|
| 567 |
370 |
|
| 561 |
375 |
|
| 560 |
380 |
|
| 563 |
385 |
|
| 564 |
~390 |
comma |
| 561 |
395 |
|
| 568 |
400 |
|
| 567 |
405 |
|
| 572 |
410 |
1.5-fold |
| 578 |
415 |
|
| 574 |
425 |
|
| 575 |
430 |
first movement |
| 574 |
435 |
|
| 571 |
440 |
|
| 565 |
445 |
|
| 564 |
450 |
embryo starts rotating |
| 562 |
455 |
|
| |
~460 |
2-fold |
| 561 |
470 |
|
| 557 |
475 |
|
| 559 |
485 |
|
| |
~490 |
visual sexual dimorphism |
| |
~520 |
3-fold |
| |
~620 |
last cell death |
| 556 |
635 |
|
| |
~660 |
cuticle synthesis begins |
| |
~730 |
pharyngeal pumping begins |
| 557 |
735 |
|
| 558 |
740 |
|
| 558 |
~800 |
hatching |
* Cell number jumps when time reach the next point. For example: at 100 min, there are 28 cells, the cell number remains the same until 105 min.
