1s orbital
Explanation:
The electron has to go into the first energy level, in the 1s orbital. Helium, with two protons, will have two electrons. These are placed one at a time into the 1s orbital. This makes helium a very contented atom.
Both plants and animals have these. It is a eukaryotic cell.
Meiosis produces four genetically different haploid cells.
This type of mutation would be called a deletion
Hope this helps :)
