Psychologic

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"Pure mathematics is, in its way, the poetry of logical ideas." -Albert Einstein
Member Since: August 30, 2008
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siftbot says...

Congratulations on reaching new heights on VideoSift. You have earned yourself 10 stars, earning you status of Bronze Star member. You have been awarded 1 Power Point for achieving this level. Thanks for all your contributions.

grinter says...

Just to let you know, I posted a reply in an attempt to answer your question about evolution through chromosomal aberration. I'm not a cytogeneticist, but I've tried to explain my understanding of things.

In reply to this comment by Psychologic:
One idea he doesn't cover is how the evolution of one species eventually gives rise to other species with a different number of chromosomes. I think this area of evolution is what led to the "dogs giving birth to cats" argument. A member of a species that gains or loses a chromosome through mutation shouldn't be able to reproduce with the relatives or its parents.

The explanation I have seen for this event is that it requires multiple individuals within a population to have the same non-detrimental mutation, in which case they could mate with each other to perpetuate their own new line of organisms. Obviously this would be an enormously improbable event, but when you're talking about billions of chances over countless years then it would almost certainly have to happen at some point.

Is there any other explanation for this situation that I am not aware of?

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