You seriously think that biologists the world over have all made a catastrophic failure in basic anatomical identification and that these structures that can be dissected at every stage along embryological development and shown how they develop into certain structures in fish, other structures in terrestrial vertebrates, and still others in invertebrates don't actually exist?
No, once again I am not saying that at all. Which proves you don't understand English.
I have looked at the photographs and the embryo of a dog and a human was very different to the drawings you show. The tail is not as long in humans. The actual photographs show different shapes for different embryos.
I believe the brancial arches do exist, but these rudimentary forms didn't always look the same exactly, in the photographs I saw in the seminar.
It's not that I deny the existence, it's that they are not gill slits. I blob that looks like a penis and becomes an arm, isn't a penis-blob even if you name it that.
My only point is that these aren't "gills" in humans, at any stage. That these might become gills in fish is logically irrelevant because we wouldn't call these "human lung arches", would we? If these rudimentary arches are 100% accurately the same as one stage, as human branchial arches, then prove this, otherwise I am not obliged to believe that these rudimentary shapes are the "same" things in fish, human, dog. Actual photographs are what is needed, as I repeat, I do not trust you in the least. If you can show a fish, a dog and a human photograph of embryos at the same stage of development, then i will change my mind. That is your homework, not mine, because it is you who wanted to persue this in detail when it wasn't the topic.
If you are so confident they will be like the drawings, then show us. The likes of Gould disagree.
I pointed out something sound when I said that if they never become gills at all, in anyway, in say, a human or a dog, then why should they be called gill slit? Why should we believe that slightly similar rudimentary shapes prove something about gills where there are no actual gills, only rudimentary shapes?
Edited by mike the wiz, : No reason given.
Edited by mike the wiz, : No reason given.