Formerly About Advanced Micro Devices Message Board

STOCKTALK

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor. We ask that you disable ad blocking while on Silicon Investor in the best interests of our community. If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.

Politics : Formerly About Advanced Micro Devices

Public Reply Prvt Reply Mark as Last Read File

Previous 10 Next 10 Previous Next

To: Jim McMannis who wrote (246315)	8/17/2005 12:19:43 AM
From: neolib	Read Replies (1) of 1582284

So, you believe...Ontogeny recapitulates phylogeny? Not quite the current view, but it was actually a useful step along the way. The current field of developmental biology, which looks at how embryos develop is showing indeed that common genes control the development of different structures across a wide range of distantly related species. It's not that the embryo is actually going through a miniature version of the adult bodies of all the ancestors in succession as it develops. Rather embryos of related species (even say humans & fish) go through very similar stages early on, hence the common visual phylogeny. You might roughly view "Ontogeny recapitulates phylogeny" as being similar to Copernicus vs Kepler on the solar system. It was an important step to realise that embryo development said something important about related species, but it lacked a clear understanding of the mechanics of why that is, just like Copernicus made the leap to a Sun centric solar system without understanding the nature or mechanism of orbital motion, something that Kepler & Newton were needed for.

Report TOU Violation

Share This Post

Public Reply Prvt Reply Mark as Last Read File

Previous 10 Next 10 Previous Next