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Brown bears and polar bears can bread so...
ОтветитьDeer, deer on the wall, why u have gas mask so small?
Human, human on Google Chrome, I share a room with a deuterostome.
"Ichthyosaur"
Isn't that an old illustration of a whale?
Whom do you mean by "we"?
ОтветитьAweeeeesome! I love ur way of teaching.
ОтветитьIf Greek has 10000 words, and Latin has 10000 words, we have 20000 words, that we will be able to combine into 400000000 words in a simple 2-composition to form the generic name. If so few words in the languages in question was really an issue, the number of names would still be enough.
ОтветитьAmazing content!
ОтветитьI wonder whether it makes sense to focus exclusively on evolutionary descent in setting up a particular phylogeny. It's appropriate do do so when we ARE only interested in genetics.
But sometimes we're interested in other dimensions of how organisms relate to each other. An obvious example is what role particular organisms play within given ecosystems. Because of convergent evolution, sometimes you get very different organisms occupying very similar ecological niches. Surely it would be useful to have parallel phylogenies based on those attributes as well...
That doesn’t mean we should go back to Linnaeus, but his classification was arguably closer to a niche-/ecology-focussed phylogeny than what we're committed to now.
We really should be called "homo narrens": it's more factual and less presumptuous...
ОтветитьKeep the videos coming brotha! Just a matter of time before your view numbers increase to where they should be.
Ответить"some of us still are"
ОтветитьI may have missed it, but you seamed to have glossed over radial cleavage and spiral cleavage in embryo development, which comes even before invagination. Yeah, their are more, but that does get a bit more complex than needed.
Another side issue, one that might not need to brought up here, but is a fun issue of debate: Which separated first, Ctenophora (comb jellies) or Porifera (never mind that normal sponges and glass sponges may not even be related), and that Ctenophora have tissue layers and muscles and a nevus system all being parallel evolutions.
Still, glad I found this series, and you are doing a good job.
You know the only reason deuterostomes were called that is because scientists didnt want to call us protoanus
Ответитьthis is the third of your videos i have seen. well done. subscribed!!
ОтветитьDo you think it may be possible that with increased phenological mismatch due to climate change that some species that did not breed because they had different breeding cycles may begin to phenologically match breeding cycles? Assuming they are close enough to a speciation nodal point to breed fertile or even infertile offspring of course.
In reality Ernst Mayrs basic species definition that is generally taught isn't the case all the time of course.
EN? Evolution of Numbats ? Evolution of Nelephants? Evolution of numans? Just what is EN?
ОтветитьMy favourite Aron Ra joke - we were all assholes. Some still are
ОтветитьSounds like this will be an interesting series I look forward to seeing more
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