Mrcauser’s Weblog

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One of the great mysterys in life…..

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How we came into existence. No conclusive proof so far that convinces me that we are here by accident or evolution. Or for that matter,  that some GOD waved a magic wand. Read the following and ask yourself….. How do genes get conveniently “fused.”

Macroevolution: Its definition, Philosophy and History

Creationists often say that species cannot be evolved from each other because chromosome numbers are different. Humans, for example, have 46 chromosomes, while chimpanzees have 48. But the human chromosome 2 is the result of what is called a Robertsonian fusion – the ancestral ape chromosomes 2p and 2q appear to have fused at their ends (telomeres) to form the human chromosome 2 (Williams, not dated), and other species that have large chromosomal differences can still interbreed (Nevo et al. 1994). DNA aligns according to local sequence rather than large-scale chromosome structure, and this is why inversions and translocation in parts of the sequence still allow interbreeding.

There appears to be no single amount of genetic variation common between closely related species that prevents interbreeding. In some, only a few are sufficient. In others, much variation, such as the large chromosomal difference in Nevo’s mole rats, fails to prevent interbreeding. Introgression, or the leakage of genes across species boundaries, has been observed in lizards, plants, birds, and fish.

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Written by mrcauser

June 16, 2010 at 7:18 am

Posted in Uncategorized

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