wehappyfew

No, you silly evilutionists...

Clearly, these genes are the remnants of DEGRADED genomes, since information can only be LOST by mutations. Obviously, insects HAD circulatory systems and clotting blood BEFORE THE FALL!!! And the probably lived far longer lives as a result... and they were much harder to squash, but they didn't bother anyone because they used their stings and bites only on PLANTS... they were all vegetarian bugs back then, and yeast needed insulin to regulate their blood sugar because they couldn't decompose dead things... because NOTHING DIED - the Creation was PERFECT!!! So the yeast politely sipped sugary fruit juice like all the other perfect organisms in the Garden of Eden, so they needed insulin to regulate all that sugar.

Got it?

[ January 31, 2002: Message edited by: wehappyfew ]</p>

pug846

You spelled waaaaaay too many words correct. Although, the use of capital letters was impressive. A few more !!!! would help too.

Peez

It would seem so. The Annelida (earthworms, leeches, etc.: closed circulatory system) are most closely related to the Arthropoda (insects, crustaceans, spiders, etc.: open circulatory system). The closest phylum to those is Mollusca (clams, snails, squids, etc.), most of which have an open circulatory system, though the octopus and squid have closed systems. We are Chordates, and our closest relatives are probably Echinoderms (starfish, etc.), which also have closed systems.

Peez

Peez

Yes, though the blood pressure in an insect is very low and so bleeding is less of a problem (and there is no such thing as "internal bleeding" since the blood is not confined to a circulatory system most of the time). What I have read indicates that blood clotting is accomplished by cells moving to a wound a blocking it, but I suspect that this is not a well-researched area. Note that yeast is a fungus, and the fungi are closely-related to the animals.

Peez

MortalWombat

Actually, under certain starvation conditions, yeast will grow in a multicellular filamentous state, much like other filamentous fungi. In this case, one would think that it would be VERY important for these cells to signal each other about their sugar consumption.

See:

Cell 1992 Mar 20;68(6):1077-90

Unipolar cell divisions in the yeast S. cerevisiae lead to filamentous growth: regulation by starvation and RAS.

Gimeno CJ, Ljungdahl PO, Styles CA, Fink GR.

Diploid S. cerevisiae strains undergo a dimorphic transition that involves changes in cell shape and the pattern of cell division and results in invasive filamentous growth in response to starvation for nitrogen. Cells become long and thin and form pseudohyphae that grow away from the colony and invade the agar medium. Pseudohyphal growth allows yeast cells to forage for nutrients. Pseudohyphal growth requires the polar budding pattern of a/alpha diploid cells; haploid axially budding cells of identical genotype cannot undergo this dimorphic transition. Constitutive activation of RAS2 or mutation of SHR3, a gene required for amino acid uptake, enhance the pseudohyphal phenotype; a dominant mutation in RSR1/BUD1 that causes random budding suppresses pseudohyphal growth.

scombrid

You mean man took insects down with him in the fall? No wonder they're so aggravating, they must hate us.