Evolution Simplified

Just the fact that the unlikely scenario is possible means the process is not absolute. However unlikely, it might not happen.

OK, so being born homozygous dominant has nothing to do with the parents.

OK, I must be confused about who's being born homozygous dominant. I thought you meant the offspring of the one with the positive trait.

I have that terminology down. But something can be passed on either recessively or dominantly. Just because it's recessive, it doesn't mean it can't appear later. I thought you were saying that there was one unlikely scenario in which the positive trait would not be passed down at all.Come to think of it though, if it doesn't appear in the phenotype (if it's recessive), it wouldn't affect survival rate, I would assume.

OK, but just to clear this up, it doesn't have anything to do with the partner? It's just about the genetic make-up of the individual with the positive trait?

Ok, we can conclude the following:We need two ingredients for evolution to occur:1. a non-neutral trait must appear in the phenotype.
2. the genetic make-up of the individual with the non-neutral trait must be such that the non-neutral trait can be passed down to the next generation.Neither of these are absolutes. But they are probabilities.

Wouldn't it depend on how long they've been increasing and what rate?Perhaps most species are increasing but haven't been doing so for very long, or perhaps the rate of increase is so small we don't notice it. Is that theoretically possible?Are you going to answer this question or not? I already asked you twice.This message has been edited by robinrohan, 05-12-2006 06:43 PM

I'm trying to figure out what is meant by a "fact" as used in the OP.Also I'm tyring to figure out if the OP is talking about the present day or in historical terms.I'm trying to find out if these facts are inevitable.

What do you mean by a "fact," as used in the OP? Is it a probability or a certainty?Edited by robinrohan, : No reason given.

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Statement of basic position: I am a nihilist, which means, in my sense of the word, that life has no objective purpose. This entails a lack of belief in God. My beliefs are tentative.