No. it is still and always occurring. it won't stop, it always happens. it is not some static thing that happened in the past tense. Species continue to adapt to their surroundings, or be naturally selected into extinction.
Evolution occurs in population not in an individual.
Yes. Evolution ocurred in all geologic periods.
Down Syndrome is a the addition of an extra chromosome and not really related to evolution. It is more of a genetic mutation that causes this event to occur.
You do not allow evolution to occur, for you are evolution in selective breeding.
The more variation there is in a group of specimens, the more evolution can occur between them.
During evolution, chromosomal cariation in structure cannot occur due to
For a mutation to affect evolution, it must occur in the DNA of reproductive cells (sperm or egg cells) so that it can be passed on to offspring. Mutations that occur in somatic cells (non-reproductive cells) do not directly impact evolution as they are not inherited by future generations.
It already has in some instances
Selective Breeding of course!
Evolution would not occur if there is no genetic variation within a population, no selection pressure, or if there is no reproduction and passing on of genes to the next generation.
Absolutely. Evolution isn't an historical process; it is on-going as long as there is life.
Evolution is sometimes described as macro-evolution, which is the long-term evolution of an entire new species, and micro-evolution, which is largely to do with less significant evolutionary changes within a species. Many creationists accept the existence of micro-evolution, but say that macro-evolution does not occur.