<span>Answer: Cellular differentiation is responsible for one daughter cell becoming a sieve tube whereas the other becomes a companion cell. Cell differentiation occurs as different genes are switched on and off.
Hope this answer helps!</span>
If i am right can i plz get brainiest?
Answer:
We use models in order to represent Earth's processes on a smaller scale so that it is easier to study them. ... Changes in any part of the Earth's system affects all other spheres.
Answer:
i don't think the vaccine will help. a lot of people died from it.
Explanation:
The body contains about a trillion cells
