What evolution Is not?
Non-genetic changes that occur during an organism’s life span, such as increases in muscle mass due to exercise and diet, cannot be passed on to the next generation and are not examples of evolution.
What are the 2 main ideas of evolution?
Darwin’s theory consisted of two main points; 1) diverse groups of animals evolve from one or a few common ancestors; 2) the mechanism by which this evolution takes place is natural selection. This SparkNote will first take a look at Origin of the Species, and then more closely examine Darwin’s theories.
What would happen if evolution did not occur?
From the fossil record we know that many species of animal and plant were unable to realize these necessary evolutionary alterations, and went extinct. If the mechanism of evolutionary change did not exist, there would be far fewer species than there are today.
Why can’t evolution occur quickly?
Evolution is usually thought to be a very slow process, something that happens over many generations, thanks to adaptive mutations. But environmental change due to things like climate change, habitat destruction, pollution, etc. is happening very fast.
Did we evolve from apes or monkeys?
But humans are not descended from monkeys or any other primate living today. We do share a common ape ancestor with chimpanzees. But humans and chimpanzees evolved differently from that same ancestor. All apes and monkeys share a more distant relative, which lived about 25 million years ago.
Why are there still monkeys if we evolved from them?
If evolution is real why are there still monkeys? Firstly, humans did not evolve from monkeys. Instead, monkeys and humans share a common ancestor from which both evolved around 25 million years ago. This evolutionary relationship is supported both by the fossil record and DNA analysis.
Does evolution only occur slowly?
Individual organisms can evolve during a single lifespan. Evolutionary change is based on changes in the genetic makeup of populations over time. Evolution only occurs slowly and gradually. Because evolution is slow, humans cannot influence it.
Why do some animals not evolve?
Why do some species survive while others go extinct? Extinction is often caused by a change in environmental conditions. If conditions change more quickly than a species can evolve, however, and if members of that species lack the traits they need to survive in the new environment, the likely result will be extinction.