Respuesta :
In the absence of growth factor, most animal cells will stop the cell cycle at a restriction point in G1 phase.
What is growth phase?
Interphase consists of G1 phase (cell growth), observed via way of means of S phase (DNA synthesis), observed via way of means of G2 phase (cell growth).
The G1/S transition is noticeably regulated via way of means of transcription thing p53 if you want to halt the cell cycle while DNA is damaged. It is a "factor of no return" past which the cell is dedicated to dividing; in yeast that is referred to as START and in multicellular eukaryotes it's far termed the limit factor (R-Point).
Thus explained.
To learn more of growth factor refer link :
https://brainly.com/question/2284816
