I see that as off a couple of months ago, my old pal computer technicians and right-wing, birther, creationist, conservative Ilion was still peddling his anti-evolution claim that the human chromosome 2 fusion disproves evolution.
He's been peddling this claim - and refusing to budge despite having been corrected by at least 4 professional biologists that I am aware of - for about 8 years.
Briefly, humans have 46 chromosomes, while the other great apes have 48. There is evidence that human chromosome 2 arose via a fusion of two other chromosomes, and that is why we have 46. Ilion claims that even if thi sfusion occurred, 2 problems arise - 1. depressed fertility and 2. the fixation in the population (not enough time, or something).
The short answer is, the human chromosome 2 fusion is not really an issue.
And we can say this by looking at living mammals who do perfectly well with altered karyotyopes fixed in their population (even some that maintain polymorphic karyotyes, which Ilion insists is a bad, bad thing and essentially impossible).
Let's look at one example.
The domestic horse has 2n=66. Przewalski's horse has 2n=64. The difference is a fission of the domestic horse's chromosome 5 (or a fusion of 2 of P. horse's chromosomes forming the domestic horse's chromosome 5, if you like).
Here is the clincher - they can interbreed and produce fertile offspring.
But they are not odd numbers you say?
OK - let's stick with horses.
The Caspian pony maintains a polymorphic karyotype.
Some are 2n=64, some are 2n=65, and they get along smashingly.
Ilion the computer tech's arguments are just mantras and nonsense.
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