Dr. Miller’s enthusiasm about this chromosomal rearrangement may be tied to the older notion that such mutations are the basis for speciation. 8 This belief was shown to be overly simplistic decades ago when papers appeared describing chromosomal variations which were not eliminated by selection. One intriguing example is a single species of rodent (Holochilus brasiliensis) where 26 different karyotypes were identified in the 42 individuals tested.9 Chromosomal rearrangements have been identified within many ruminant species. There are examples in both goats and sheep where individuals with one or more centric fusions are phenotypically indistinguishable from other animals.10 One researcher who studied sheep carrying up to three different centric fusions concluded, “It is now considered that there is little or no evidence to suggest that centric fusions in a variety of combinations affect the total productive fitness of domestic sheep.”11 So, the bottom line is that centric fusions themselves do not inevitably result in a new species.
I’m surprised that Dr. Lightner played so fast and loose with the genetics terminology. She has used “chromosomal rearrangement” and “centric fusions” as if they are indistinguishable. They are not, making this paragraph a little suspect. A centric fusion is just one type of rearrangement. There are also deletions, translocations, etc. I don’t know all the papers about “chromosomal variations which were not eliminated by selection” to which she is referring; therefore, I can neither agree nor disagree with what she is saying about Dr. Miller’s ideas on chromosome 2 fusion. Bottom line: centric fusions may still result in a new species.
pepipop;12451507:
Although Ken Miller’s story does not properly consider current scientific understanding of chromosomal fusions or significant genomic differences between apes and humans, he promotes it enthusiastically to support his belief that humans descended from apes.
15 He appears to be blind to the fact that the belief that humans descended from apes is a religious (atheistic) one; such changes have never been observed.
Where exactly did Miller say that humans “descended from apes”? In what paper or lecture does Dr. Miller not consider the current science? Lightner never mentions which paper or lecture of Dr. Miller’s that she is talking about. The one footnoted video does not contain the first statement and doesn’t support her second. I guess she thinks this tact makes it easier for lazy people to agree with her.
I find it hilarious that Lightner says here that “[Miller] makes the ludicrous claim that the only way creationists can respond to this evidence is: ‘That’s the way the designer made it’” when the fact of the matter is that she does exactly that!
According to the evolutionary scenario, our apelike ancestors underwent major anatomical restructuring to develop upright posture, speech ability, and an astounding increase in cognitive function all by random, chance processes. Such profound changes were never observed;** they are inferred because evolution has an atheistic basis and assumes there is no creator**
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The idea that so many genes were altered so that they are expressed in the proper concentration according to cell type and can effectively control the many different genes they regulate is not what we would expect of chance processes. It is more rational to believe that God created humans distinct from chimps, just as He tells us in the Bible.
Also, an excerpt from evolution lectures taught at Berkeley University.
**To begin with, let’s take a step back. Although the evolution of hominid features is sometimes put in the framework of “apes vs. humans,” the fact is that humans are apes, ** just as they are primates and mammals. A glance at the evogram shows why. The other apes — chimp, bonobo, gorilla, orangutan, gibbon — would not form a natural, monophyletic group (i.e., a group that includes all the descendants of a common ancestor) — if humans were excluded. Hominid evolution should not be read as a march to human-ness (even if it often appears that way from narratives of human evolution). Students should be aware that there is not a dichotomy between humans and apes. Humans are a kind of ape.
evolution.berkeley.edu/evolibrary/article/evograms_07
Ummm, humans **are **considered to be apes.
Apes (Hominoidea) are a branch of Old World tailless anthropoid catarrhine primates native to Africa and Southeast Asia and distinguished by a wide degree of freedom at the shoulder joint indicating the influence of brachiation. There are two main branches: the gibbons, or lesser apes; and the hominids or great apes.
Lesser apes (Hylobatidae) include four genera and sixteen species of gibbon, including the lar gibbon, and the siamang, all native to Asia. They are highly arboreal and bipedal on the ground. They have lighter bodies and smaller social groups than great apes.
The Hominidae include orangutans, gorillas, chimpanzees, bonobos and humans.[1][2] Alternatively, the family are collectively described as the great apes.[3][4][5][6] There are two extant species in the orangutan genus (Pongo), two species in the gorilla genus, and a single extant species Homo sapiens in the human genus (Homo). Chimpanzees and bonobos are closely related to each other and they represent the two species in the genus Pan.
en.wikipedia.org/wiki/Ape