You say there must be a difference in saying that planting a wolf's nucleus in a mouse egg and expecting it to grow into a wolf, and then reproductively ...
1465
lydiajh
Nov 6, 2000 11:15 pm
You say that if the constituents of the egg's cytosol are passed on from mother to child, which, of course they are, simply because it is the egg which is ...
1466
lydiajh
Nov 6, 2000 11:20 pm
I agree that Mendelian genetics are a great advancement in science. But just because we understand the impact that one small factor has on development, namely ...
1467
philsviews
Nov 6, 2000 11:20 pm
I don't idealise. I am aware of the quote (is it Heisenbergs?) that new ideas get accepted funeral by funeral, and that it is only when all the old adherants...
1468
philsviews
Nov 6, 2000 11:29 pm
At what point in the story do you want to go back to?<br><br>I am talking about modern animals at the moment, I am not considering the historcal way in which...
1469
philsviews
Nov 6, 2000 11:37 pm
"there is no complete, direct causal relationship between the effects of DNA transcription and the chemical and spatial configurations of gametes"<br><br>We ...
1470
lydiajh
Nov 7, 2000 9:58 pm
I have never said that DNA does not play an important role in protein synthesis, namely, the stabalizing of the order of amino acids. <br><br>It is patently...
1471
lydiajh
Nov 7, 2000 10:10 pm
I have never said that Mendelian genetics are useless. I am simply saying that Mendelian genetics do not account for the origin and transmission of ...
1472
lydiajh
Nov 7, 2000 10:17 pm
Just because there is not much controversy surrounding something does not make that something true. It simply makes it widely accepted. You say it would be ...
1473
lydiajh
Nov 7, 2000 10:26 pm
One more point. The third class of hormones, namely, steroids, are not coded for by DNA. They are fatty compounds based on cholesterol....
1474
philsviews
Nov 7, 2000 10:38 pm
And how is cholestrol made?<br><br>By the use of proteins, which catalyse their formation. And how is the level of steroids controlled? by a negative feedback...
1475
philsviews
Nov 7, 2000 10:44 pm
saying we don't understand how particular enzymes are switched on and off os NOT the same as saying it is controlled by something else.<br><br>It IS known that...
1476
philsviews
Nov 7, 2000 10:51 pm
The differentiation of cells is caused by chemical gradients, which are not genetic, but they are <b>CAUSED</b>by genes.<br><br>So, even the...
1477
philsviews
Nov 7, 2000 10:55 pm
How all the organisms can be genetically identical and have mutations happen?<br><br>If I have a population of genetically identical organisms, and a mutation...
1478
lydiajh
Nov 7, 2000 11:19 pm
No one has ever claimed that DNA causes all differentiation. It has been understood for several decades that other extranucleic factors transmit much of this ...
1479
philsviews
Nov 7, 2000 11:30 pm
What extranucleic factors exactly? <br><br>I do not argue that chemicals cause differentiation, but I would claim is that those chemicals are produced ...
1480
lydiajh
Nov 8, 2000 9:22 pm
My point is that there is no reason to fixate on DNA, or any other part of the zygote, as somehow being a "controller." After all, matter is matter, and ...
1481
lydiajh
Nov 8, 2000 9:32 pm
Actually, as it is explained in my biology book,the cause effect relationship during mitosis is exactly the opposite of what you have described. <br><br>"At a...
1482
lydiajh
Nov 8, 2000 9:48 pm
You are quite right. Once you have a mutation in a genetically identical population, you no longer have a genetically identical population. I am not claiming...
1483
philsviews
Nov 8, 2000 9:50 pm
You what?<br><br>Let me get this straight, our Phenotype is governed by our genotype. That is a known scientific fact. Any examination of the experiments on ...
1484
philsviews
Nov 8, 2000 9:57 pm
How does the cell divide?<br><br>At a certain point, diffusion gets less, causing a problem, the lower Oxygen and higher Carbon Dioxide levels "tell" the cell ...
1485
lydiajh
Nov 8, 2000 9:59 pm
The only way that all of development could be under genetic control is if, first of all, DNA differentiates itself, which is mathematically and chemically ...
1486
philsviews
Nov 8, 2000 10:08 pm
If there was an original metazoan animal, this must have found a way of reproducing, probably by budding, like in Hydra.<br><br>That means we now have more ...
1487
philsviews
Nov 8, 2000 10:10 pm
Can you explain how "Every other molecule in the zygote" creates more of itself?...
1488
lydiajh
Nov 10, 2000 10:07 pm
No, our genes do not control who we are. They "control" the ordering of amino acids in proteins. Organisms do not reduce to proteins, and proteins do not ...
1489
lydiajh
Nov 10, 2000 10:41 pm
Please excuse my bluntness, but I believe that none of this your above post is relevant to mine, to which it is supposed to be directed. I am referring to the...
1490
gene90
Nov 10, 2000 10:46 pm
<<Organisms do not reduce to proteins, and proteins do not "control" all aspects of life.>><br><br>Every biological reaction is related to enzymes...
1491
lydiajh
Nov 10, 2000 10:49 pm
Actually, no molecule creates anything. My statement was that the rest of the mass in the zygote is just as essential to development as is nucleic acids, and...
1492
philsviews
Nov 13, 2000 6:27 pm
You seem to get the wrong idea about 'controller'. This does NOT mean it has any understanding or can choose to do otherwise. DNA just acts in a totally blind...
1493
lydiajh
Nov 13, 2000 10:52 pm
Not every biological reaction has a protein as a reactant. Two cellular functions I know of that I believe are not regulated by proteins are photosynthesis and...
