A bay, inlect, sea loch or fjord are some possibilities.
Hope this helped, have a great day! :D
I believe the answer you are looking for is a cell cavity. Also known as: Cavity of cell, or cell space
Genes they assort independently if they follow the 9: 3: 3: 1 rule resulting from a dihybrid cross.
It shows that the genes are not on the same chromosome and they are not included.