Coral reveals ancient origins of human genes

Nature Magazine ^ | 16 December 2003 | CARINA DENNIS

[Right Wing Professor]

e News/Activism forum, on a thread titled Coral reveals ancient origins of human genes, John H K wrote: I dimly remember from a class in Oceanography that Tunicates were right on the human ancestral line - have they been sequenced? Should be closer than coral.

Yep. Ciona intestinalis, a common sea-squirt, was sequenced about a year back. Your conjecture is correct. And of course, as with all newsworthy items, it was posted on FR.

[<1/1,000,000th%]

Maybe they're not intermediate. They're a separate lineage.

[Papabear47]

Thank you....I remember Mendel and his square,dominant and recessive genes that is.However it has been forty years and I am a machinist not a biologist.

[Right Wing Professor]

If a particular attribute begins to develop such as feathers on early reptiles does the gene responsible for the previous skin mutate or is it replaced by the new gene

We can only make inferences about the genes of primitive birds. However, feather development in modern birds appears to be regulated by the same genes that control epidermal development (hairs, sweat glands, etc.) in mammals.

This is a comprehensive but very technical article. I'm not sure if it's freely available (I'm posting from work), but if it isn't, let me know and I'll brazenly violate copyright and post it.

[Junior]

Feathers (and hair) derive from the reptilian scale, not its skin.

[Doctor Stochastic]

Reptilian major or reptilian minor?

[Junior]

Centigrade.

[anguish]

Why post this article?

Indeed! I will take this up at the annual meeting of Darwin Central Command (int), and it might mean we have to change our secret, conspiratory handshake to one you won't recongnize.

[nickcarraway]

ping

[Papabear47]

Correct,I should have been more specific.

[unspun]

Conservation of design schemas, regardless of the notions of some who are the products of those schemas, as to how such things should be ordered over time.

[unspun]

Maybe they're not intermediate. They're a separate lineage.

Oops. Might have pinged you to post 32, FRiend 1/X.

[August West]

Well, the creationists have said all along that the Theory of Evolution is a shell game.

[Alamo-Girl]

Interesting point, unspun! Thanks for the ping!

[Havoc]

In other words, you really don't know and are guessing because this is all theory; but, you'll comment anyway.
rofl

[RadioAstronomer]

Thanks for the help! :-)

[tallhappy]

You left out the subheading:

Invertebrate DNA raises questions about evolution models