half of their chromosomes from each parent
Explanation: you get half of your chromosomes from each of your parents
Http://www.phschool.com/science/biology_place/biocoach/bioprop/folding.html hope it helpps
A contractile vacuole works just the same as the name suggests, in that it expands and contracts. The point of the contractile vacuole is to pump water out of the cell through a process called osmoregulation, the regulation of osmotic pressure. It occurs in freshwater protists, but mainly in the kingdom Protista as a whole.
Answer:
A Starfish is Triploblastic meaning they consist of three germ layers. Hydra are diploblastic meaning they consist of only 2 germ layers.
