Hypotonic means low that isotonic concentration of salt in the solution.the salt will go inside the cell and make them bigger
while in hypertonic the water from the cell will be drained to the solution and make cell shrink(decrease in size).
Meiosis increases genetic variability mainly by a process known as crossing over or synapsis during prophase I. During this process, homologous chromosomes link up to form tetrads that exchange DNA at locations known as chiasma in order to form genetically different chromosomes.
After a certain period of time, diseases and other sicknesses evolve along with humans, making the antibiotics nearly or completely ineffective. For example, if you took one tylenol when you have a cold, it may not be as effective the next day or so and would need to double the dose. Obviously it will all depend on the illness, and what stage it is in, and the strength of the medication. Also, at one point a vaccine for rabies might need an advanced formula because it might have evolved in animals. The possibilities are endless.
