posted on Jun, 28 2011 @ 08:51 PM
This thread is hilarious. So many people can't answer a simple question, so they write it off as a fairy tale. Ironic, since they always say
Christians write off something they don't understand as, "God did it." I also find it ironic that people will argue about 2 dogs coming from
Noah's Ark, but also support dogs coming from a far off ancestor, who came from slime, who came from an organism, who came from a single cell.
Anyways, OP, to answer your question - first, keep a few things in mind. One, there is only one species of Domestic dogs today, Canis Familiaris,
(scientifically speaking, which are supposedly descendants from the Wolf species).
There are, however, somewhere between 300 to 400 different breeds of Dogs.
Now, to start off, we'll talk about the genome. Two genomes (male/female) can have 4 different alleles (variety of a given gene) between them for
each gene locus.
There are probably some 30,000 genes in a wolf/dog, and if every gene locus were heterozygous (two different alleles), then for each gene there are 10
possible pairs of four types of allele (if the alleles are A, B, C, D; then the possible pairs can be easily calculated: AA, AB, AC, AD, BB, BC, BD,
CC, CD, DD; for n types of allele, the number of possible pairs is n(n+1_/2).
Anyways, with sexual reproduction, this amounts to a potential # of different genotypes in the descendants of 10^30000 (Oddly enough, there are
thought to be 10^80 atoms in the Universe.. Right). So, it appears only 2 wolves/dogs could produce quite a few descendants before the pattern would
have to be repeated.
So, it seems likely that there would have been plenty of genetic potential to produce all the members of the dogs that we see today. And, to be
generous, if we added degenerative changes due to mutations (which Evolutions love to champion), we have more than ample capacity in two animals to
produce all the varieties of dogs/wolves/jackals that we see today.