instruction:
Given a scientific question, generate a correct answer to it.
question:
G2 and s are phases in what process that is important in cell division?
answer:
mitosis

question:
What is continually released during childbirth through a positive feedback mechanism and prompts uterine contractions to fetal head toward the cervix?
answer:
oxytocin

question:
What is the division of the body into multiple parts called?
answer:
segmentation