pentecostal girl said:
MicroEvolution is not really evolution at all. It is the simple variation within a species. It is the prominence of genes being displayed within that species. It allows a family to have one child with blonde hair and blue eyes, while the other has brown hair and brown eyes. The children have not evolved (they are still human), they simply differ in their dominant genes.
Macro Evolution (Evolution of all living matter from non living matter) is:
Assumed. It has never been observed
Macro Evolution is Religious in nature. It takes faith to believe it, because there is No evidence.
Macro Evolution is not Biblical Macro Evolution has never happened. It differs from Micro evolution (variation) because Micro evolution states that all breeds of dog came from a dog. Macroevolution says that all dogs evolved from a rock.
I am sorry to tell you, but you haven't been very well educated in this regard. I am not criticising you, I am criticising your teacher, or whoever told you that, because it is not correct.
In reality there is just one type of (biological) evolution. In essence Evolution consists of descent with modification and natural selection as a selecting force. the parent(s) have children that vary, and some of these variations will be advantageous, some will not. the ones with the advantageous phenotype (as in their physicsl attributes) will be more likely to breed. There are a number of mechanisms that allow this variation in offspring. Allele frequency is one of them that you have already mentioned, another is mutations in the sex cells. These mutations or allele frquencies are known as the genotype of the organism, and will be expressed in it's final phenotype. Macroevolution is simply lots and lots of microevolution.
you description of macroevolution is what is more commonly known as a
strawman argument. A strawman is a weak and incorrect version of the opponents real argument, which is easy to demolish. One then attacks the strawman, demonstrates that it is wrong, and then claims that the real argument is wrong too, however it does not work.
The origin of life from "non-life" is called abiogenesis, and has nothing to do with evolution, it is simply an issue of origin. Indeed it never has been observed, but there are a number of mechanisms that could have caused it, and these are known.
Now onto your example regarding dogs. It is true that all breeds of dog will
produce dogs, however not nescessarily come
from a dog. Dogs are a member of the order Carnivorae, which used to consist of animals like the Mesonyx, which is a primitive and now extinct carnivore. All the decendents of Mesonyx will be members of the order carnivorae. however not all of them will be like the mesonyx - some will be slightly better adapted to certain tasks, and hence we have the sub orders Feliformia (cats, hyenas and so on) and Caniformia (dogs, bears, otters etc) and these orders will be further subdivided as you can see. Each generation will inherit characteristics of the previous one, and have some slightly different ones, and hence over time mesonyx can evolve into all the carnivorae we see today. Of course a member of the carnivorae order will never give birth to a member of the primate order, and this is entirely expected, however carnivorae and primates share features of the mammalia. So it is true that canines will always give birth to canines, but you cannot extrapolate that same rule backwards in time too.
You then mention that a dog will never evolve from a rock. Again you are including abiogenesis here, and that is not relevant. You see the processes of abiogenesis are very different to the processes of evolution. When one looks at evolution, one can discuss chromosome mutations, frame shifts, alleles and a myriad of other things, so it is best to keep these topics separate. Evolution does not really care about how life came about (you can see this since you accept evoltion already, though you call it microevolution) The changes in allele frequencies and mutations and so on do not relate at all to how these things came about.
So sorry that your educators have not served you well, I hope that you are interested and willing to learn the real things, rather than the strawmen which you currently know about.
