Answer: To show how different members of a species are related.
<span>Vesicles are used to transport items in many different circumstances, so I'm not quite sure how to answer your question. Vesicles are used when transporting to and from the golgi apparatus, also when transporting molecules to lysosomes. They are even used when undergoing exocytosis. Basically, they are used to carry items/molecules/wastes around within cells
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A halite crystal belongs to the cubic crystal system. The other five crystal systems are monoclinic, triclinic, orthorhombic, tetragonal, and <span>hexagonal.
The cubic crystal system is characterised by</span> <span>the way the atoms in the mineral are arranged in the three </span><span>dimensional</span><span> shape of a </span>cube. The halite crystal has this shape. Attached is an image of it.
Non-disjunction occurs when a the chromosomes do not split properly during meiosis resulting in too few chromosomes I believe.