Negative, Microevolution is an uncontroversial, well-documented, naturally occurring biological phenomenon. It happens every day. It is the process whereby preexisting genetic information is rearranged, corrupted, and/or lost through sexual reproduction and/or genetic mutation producing relatively small-scale (“micro”) changes within a population. Two long-haired dogs producing a short-haired puppy would be an example of microevolution (we’ll look at why in a moment).
Macroevolution is the somewhat more controversial, theoretical extrapolation of microevolution that requires the introduction of new genetic information. It is believed to produce large-scale (“macro”) changes. An amphibian evolving into a reptile or a reptile evolving into a bird would be examples of macroevolution.
Macroevolution is an important concept because Darwinists believe that it is the mechanism for their idea that all life evolved from a common primordial ancestor. Since microevolution is small-scale (“micro”) biological change, and macroevolution is large-scale (“macro”) biological change, many Darwinists argue that macroevolution is simply the accumulation of microevolutionary changes over time. Ostensibly, this is a reasonable extrapolation of microevolution. Darwinists, therefore, often cite evidence for microevolution as evidence for macroevolution. However, because macroevolution requires new additional genetic information, no amount of rearrangement, corruption or loss of existing genetic information will produce macroevolution. In other words, no amount of microevolution will produce macroevolution. Darwinists draw a false correlation between the two. We will now take a closer look at both microevolution and macroevolution.
Microevolution
We will begin with microevolution. Let’s say, for example, that within the dog genome there are both a gene for long hair (H) and a gene for short hair (h). Now imagine that the very first dogs possessed both genes (Hh). If two Hh dogs bred, half of the Hh from one dog would combine with half of the Hh from the other dog through sexual reproduction, and there would be four possible outcomes for offspring: HH, Hh, hH and hh puppies.
Now let’s suppose that the longhair H gene is the dominant gene and the shorthair h gene is the recessive gene. That means that when a dog possesses both genes, only the longhair H gene will be expressed, i.e., the dog will have long hair. So, if two longhair Hh dogs bred, the odds are that they would have three longhair puppies (HH, Hh and hH) and one shorthair puppy (hh). The two longhair dogs having a shorthair puppy would be an example of change within a population resulting from the rearrangement of preexisting genetic information (i.e., microevolution).
If a longhair Hh dog bred with a shorthair hh dog, the odds are that they would have two longhair puppies (Hh and hH) and two shorthair puppies (hh and hh). If two shorthair hh dogs bred, they would produce only shorthair hh puppies. And if this group of shorthair hh dogs became isolated from the longhair HH, Hh and hH dogs, they would lose access to the longhair H gene altogether and become an “isolated gene pool.” When it comes to dogs, isolated gene pools are called “purebreds.” Likewise, if a group of longhair HH dogs became isolated from the shorthair h gene, they would be considered purebred. On the other hand, the longhair Hh and hH dogs would be called “mutts.” Human breeders have been exploiting this biological phenomenon for thousands of years, selecting dog couples to mate based on their appearance in order to accentuate and attenuate traits gradually over time and thereby introduce new breeds.
Read More: http://www.gotquestions.org/microevolution-macroevolution.html