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Proto-oncogene

proto-oncogene

(Science: molecular biology) The normal, cellular equivalent of an oncogene, thus usually a gene involved in the signalling or regulation of cell growth. In general, cellular proto-oncogenes are prefixed with a c, rather than their abnormal viral counterparts, that are prefixed with a v, for example c myc and v myc.

They are fragments of dNA, related to oncogenes but are the normal switches used to control growth and tissue repair.


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Re: Refutation of Evolution theory

In short, this precludes any intermediate steps. Before there was life there was proto-life, something that isn't quite living but has some of the qualities of life, which itself spawned from an organic "soup" (figuratively speaking). As these qualities ...

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by NMLevesque
Fri Nov 22, 2013 7:03 pm
 
Forum: Evolution
Topic: Refutation of Evolution theory
Replies: 13
Views: 12493

Refutation of Evolution theory

... you're thinking "but I'm talking about the origin of life, not flagella!" I would point out that these arguments apply equally well to proto-life. The point is that a complex system arises piece by piece, not all at once. There were probably many cell-like structures that were quasi-alive, ...

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by Luxorien
Mon Feb 04, 2013 10:28 pm
 
Forum: Evolution
Topic: Refutation of Evolution theory
Replies: 13
Views: 12493

Do the simplest bacteria have ribosomes and helicase?

... Chances something useful and stable will be produced are negligable but given other conditions it might happen. When it happens, you have proto-enzymes capable of manipulating RNA and at later stages DNA and amino acids. When you think of chemical reaction conditions and energies, take ...

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by dustman
Fri May 25, 2012 2:13 pm
 
Forum: Molecular Biology
Topic: Do the simplest bacteria have ribosomes and helicase?
Replies: 27
Views: 13641

Evolution of the Face and Head

Imagine a very simple creature: Something with a blind gut (one opening is mouth and anus), like a jellyfish. After the evolution of a true gut, with mouth and anus, animals gain a front and rear end (movement now is not random, but mouth-first). The most usefull and logical place for sensory organs...

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by stauffie
Mon May 07, 2012 12:42 am
 
Forum: Evolution
Topic: Evolution of the Face and Head
Replies: 4
Views: 3879

Camouflage in nature

Just wanted to add to Gavin's response, that no you do not need massive and rapid changes. The proto- leaf insect even when it does not mimic a leaf exactly will still be that much harder to pick by the predators. But some will be picked, and among the picked one will ...

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by canalon
Fri Nov 11, 2011 3:30 am
 
Forum: Evolution
Topic: Camouflage in nature
Replies: 16
Views: 12676
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