Search found 5 matches

by joneall
Wed Sep 12, 2018 6:28 am
Forum: General Discussion
Topic: Are organisms algorithms?
Replies: 0
Views: 404

Are organisms algorithms?

Yuval Noah Harari (a historian, not a biologist) claims repeatedly in his book, "Homo deus": "Science is converging on an all-encompassing dogma, which says that organisms are algorithms and life is data processing." From this, he suggests that further evolution may reduce humans to the current stat...
by joneall
Sun Apr 01, 2018 3:59 pm
Forum: Evolution
Topic: Natural selection ends in absurdity or nonsense
Replies: 27
Views: 52017

Re: Natural selection ends in absurdity or nonsense

I'd just like to point out that whereas mutation works on genes, NS works on phenotypes. A phenotype in general corresponds to a whole slew of genes. (Think skin color.) A given phenotype may therefore be selected because of its survival value in one environment, ignoring its dangers in others. Thin...
by joneall
Sun Apr 01, 2018 3:44 pm
Forum: Cell Biology
Topic: Chemiosmosis complex in sets?
Replies: 0
Views: 2390

Chemiosmosis complex in sets?

You always see nice diagrams of the four chemiosmosis complexes in, say, the inner membrane of a mitochondrion, all lined up in order (and in a straight line), each one eagerly awaiting the output from the previous one. Does it really happen this way? Does the ubiquinone from a given complex 1 carry...
by joneall
Sun Jul 24, 2016 1:30 pm
Forum: Cell Biology
Topic: Does chemiosmosis pump protons or hydronium ions?
Replies: 3
Views: 3863

Does chemiosmosis pump protons or hydronium ions?

In the process of chemiosmosis (or the electron transport chain), I always read that the process pumps protons across a membrane -- either the inner membrane of the mitochondria or the thylakoid membrane of chloroplasts. I wonder about this. I suspect that what is really pumped are hydronium ions, H...
by joneall
Wed May 04, 2016 2:24 pm
Forum: Genetics
Topic: genetic witches in evo devo
Replies: 1
Views: 2263

genetic witches in evo devo

I am reading Sean Carroll's "Endless forms most beautiful" and trying to understand genetic switches. I have trouble seeing the big picture -- how to put it all together. I will explain my current perception of the process in the hope you can either correct my errors or add the pieces I am...