Posted by: Craig C. ®
04/27/2003, 18:08:42
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Lamark believed the discredited idea that individual organisms can inherit the acquired traits of their ancestors.
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Posted by: Bahman ®
04/27/2003, 18:51:18
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1)If the acquired traits are not passed to offsprings at all, does it mean that acquired traits simply disappear?2) What kind of triats are inherited?
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Posted by: Craig C. ®
04/27/2003, 19:17:35
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If the acquired traits are not passed to offsprings at all, does it mean that acquired traits simply disappear?The death of an individual means the disappearance of his acquired traits. It would be Lamarkian for a father to say, "I can make my children more muscial by learning to play the piano". His children may inherit genes from him that predispose them to the piano and/or that give them nimble fingers, but they will have to develop that capability on their own. His piano practicing will not change the nature of the genes that he will pass on to his children. What kind of triats are inherited? Physical appearance, aptitudes, dispositions, even susceptibilities to certain kinds of disease - anything with a genetic component.
Modified by Craig C. at Sun, Apr 27, 2003, 19:18:37
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Posted by: Bahman ®
04/27/2003, 19:37:43
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"His children may inherit genes from him that predispose them to the piano and/or that give them nimble fingers, but they"Where did "the piano genes" come from? If the father's learned triat of piano playing didn't have any effect on the genes he passed to his son, then where did the son get the "predisposion" to piano-playing from?
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Posted by: Craig C. ®
04/27/2003, 19:59:10
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Where did "the piano genes" come from? If the father's learned triat of piano playing didn't have any effect on the genes he passed to his son, then where did the son get the "predisposion" to piano-playing from?The predisposition may come from one or more of his father's genes, one or more of his mother's genes, a combinaiton of one or more of his father's genes with one or more of his mother's genes, or it may be the result of a mutation that has produced a new version of one of his parent's genes. But the fathers decision to play the piano has no effect on the DNA that he will pass on to his offspring. Why do humans have a love of music (some more than others) and finger agility (some more than others) - which together might yield a good piano player? Because at some point these traits conferred a survival advantage on our ancestors. What would be the survival advantage of music? Perhaps as a form of communicaiton or for sexual selection (the ladies like it). The survival advantages of nimble fingers seems more apparent. Craig
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Posted by: Bahman ®
04/27/2003, 20:04:01
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So does it mean that the offsprings of a concert pianist have the same chance of becoming good pianists as much as the rest of society?
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Posted by: Craig C. ®
04/27/2003, 20:14:27
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So does it mean that the offsprings of a concert pianist have the same chance of becoming good pianists as much as the rest of society? No, the children have a better chance of becoming good pianists than other people. They also have a better chance of looking like him than do other people. After all they get half their genes from Dad.
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Posted by: Bahman ®
04/27/2003, 22:17:04
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OK, so the children have the "piano-gene" that their father had, but not any stronger, right? Because the process is not cumulative and the fact that the father had so much practice didn't translate into stronger piano-genes for the children, right? Now, if that is all true, then the question is, how did the piano-gene started altogether? In other words, if we go back far enough to the time when piano was just invented, how did the piano-gene come into being, if not because of the practice of the early players of piano?
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Posted by: Craig C. ®
04/27/2003, 22:37:32
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OK, so the children have the "piano-gene" that their father had, but not any stronger, right? Because the process is not cumulative and the fact that the father had so much practice didn't translate into stronger piano-genes for the children, It is quite possible that the children could possess more talent than the father. What are the characteristics of the mother? Remember that the offspring inherit half of his genes and half of hers and there is also always the possibility of a mutation. The mother may have exceptionally nimble fingers - even more nimble than the father - so the children could benefit from that. Or she could have an unusual attention span that enables more intense and extended periods of practice. Or a child may have a mutation that confers unusual hearing acuteness, so the child benefits from that. The point is that these kind of traits are extremely complex and actually involve many different genes. So to get the best effect you would need to mix and match, always selecting the best traits for piano playing - like breeding a champion race horse Now, if that is all true, then the question is, how did the piano-gene started altogether? Well, your assumptions are faulty, as I explained above. In other words, if we go back far enough to the time when piano was just invented, how did the piano-gene come into being, if not because of the practice of the early players of piano? The ability to play the piano well requires a complex combination of traits, and genes favoring these traits evolved because they conferred a survival advantage - not because they had anything to do with the piano. Craig
Modified by Craig C. at Sun, Apr 27, 2003, 22:39:54
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Posted by: Bahman ®
04/27/2003, 23:58:07
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Your first paragraph is concerned with other factors which I am not interested in. Let's assume all other factors are the same for the offspring of a concert pianist and other offsprings. We want to focus only on the father. Now you next say:"The point is that these kind of traits are extremely complex and actually involve many different genes. So to get the best effect you would need to mix and match, always selecting the best traits for piano playing - like breeding a champion race horse" And you are saying that the father practicing and becoming the best pianist, does NOT have any effect in the complex mix you mention above?
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Posted by: Craig C. ®
04/28/2003, 01:13:55
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And you are saying that the father practicing and becoming the best pianist, does NOT have any effect in the complex mix you mention above?Yes, that is correct. His behavior has no effect on the genetic make-up of his children. All that matters is his DNA.
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Posted by: JAK ®
04/28/2003, 02:11:01
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Craig, I don’t think you intend to exclude environment for the father who plays in the hearing of his children. Your answer is quite correct. I am not confident that Bahman is understanding your precise construction. Maybe.... JAK
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Posted by: Craig C. ®
04/28/2003, 08:32:25
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I don’t think you intend to exclude environment for the father who plays in the hearing of his children. Bahman is asking whether the genes of the offspring are affected by the acquired characteristics of the parent. I am trying to make it clear that this is not the case. Of course the father can create an environment that helps the children to learn music, but that is the transmission of culture, not genes, as I am sure you realize. Craig | |
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