Types of Speciation: Allopatric, Sympatric, Peripatric, and Parapatric 

"Professor Dave again, let's make some new species..." Dude, I like your channel and you seem like a cool guy, but I'm married.

As always, you have a gift for both breaking down complex concepts in to bite sized segments, as well as re-igniting a nascent interest in the sciences.

Thank you so much Professor Dave! All of your videos have been so effective! Keep up the amazing work!

I should have watched this long ago! This explanation is so concrete! Thank you, Prof. Dave!

man, I was literally watching another video wondering what the types were, and youtube brings me back to you. good job and thanks.

I'm not an expert in biology but I have a strong interest in understanding all the disciples of science including biology and this video definitely helps me understand the concepts behind evolution. Thanks man for another informational video.

Professor David ur videos are really helpful

Creationists are gonna hate this video.

Hey Professor Dave! Would you consider doing a series on critical thinking? Also research methodologies?

I’m here before the creationists are “It’s free real estate”

I don't think Kent Hovind is prepared for this. Great video!

I’m a little late with this comment but here goes : I enjoyed your videos before you spanked the flat earther’s bottoms, but they are truly works of RU-vid art. You are a pretty darn good teacher with an easy to understand style. I am pretty old ( 68 ) yet concepts I had difficulty with in my younger years seem easily grasped with your presentations. Keep up the good work young man !- Rich

Oh I’m so using your videos for my classroom. I’m so glad I found this channel.

The video helped a lot thanks. You are the best Professor ever! :)

Evolution is utterly amazing and awe inspiring.

Well explained! Thanks!!

Fascinating! Admittedly, I'm fairly ignorant on biology, but this all made sense. It's frustrating that there's really not enough time in a human lifespan, to become learned in all the fun STEM fields. Biology and microbiology are incredibly fascinating to me in the later half of my life. It somewhat makes me question my decision to limit my focus to a very specialized area in high energy physics.

Thanks for this. I think it helped me discover something very interesting.

this was super helpful, thank you so much!! you just saved my anthro essay

great explanation thank you!!!

The Thumbnail looks the fishes were converted to shia and Sunni Muslim

Thanks, Professor Dave! Your tutorials are always very speciatio...err, special! Keep cranking out the content!

I bet Mr. Hovind wasn't prepared for that! 🤣🤣👍

Thank you!

Read the title and thought, “great. Prof Dave is just making up words...”. 🤣😂.

Isn't the definition of species a little fuzzy sometimes though? I mean, polar bears and grizzly bears are seperate species, but can and do produce fertile offspring. And some are another half-step away, like lion/tiger hybrids. Female ligers are fertile, while male ligers are sterile. There are numerous other feline hybrids which produce fertile offspring in both sexes as well, such as lion/leopard and housecat/serval and housecat/caracal mixes as well. And, of course, we can't forget about humans and Neanderthals. We could also talk about plants where the lines get even more blurred. Anyway, I really did enjoy this video and it explains speciation quite succinctly. This comment isn't meant as critisicm of your video, I just find the topic fascinating. Biology is a beautiful mess, really.

Great content....helpful for NEET aspirants also thanks

thank u professor ....

thanks so much for helping!1!

I love how simple and informative your videos are but I feel like you could make it more interesting The rate of information flow is great, but I feel like the monotone voice forces me to zone out after a minute Showing some more passion and including small tangents to explore the subject in a way that keeps us interested and learning would vastly increase your watch time. I feel like the globebusters debunk video had a good balance in staying interesting while also sticking to the topic maybe thats a good place to start

Nice hair cut professor. Thx for the explanation

You showed a seed getting blown away on an island as an example of potential allopatric speciation, but isn't that rather peripatric speciation?

which speciation is the rarest? Sympatric or parapatric???

Hey Dave! I hope you read this. I have a couple of little known proofs to use against that Hovid guy. 1- he thinks the layers you see in a earth sample are organised by density and can't explain why they form in the first place. Basic reason: the earth continually SPINS, picking up space dust. Can't remember what the rate was, but I think it was something like 'earth gains 1mm of soil every 500 years . Also, the Earth is SPINNING fast enough that the space dust essentially acts like sandpaper and smoothes the earth into a spheroid...go figure 2. Evolution is physically observed. Not sure who to credit for this sweet research! Not only can you observe evolution, you can observe rapid evolution as well. There was a study done with wolves. All the wolves are paired into groups of 2 according to traits they have in common. Selective breeding the wolves that have more desirable traits is the start of evolution. Not only that, but they successfully proved and observed evolution. Because wolves evolved so fast that it only took like 10 generations to domesticate. This all took place within like 4-6 years

اريد باقي المحاضرات مترجمة اذا ممكن

I have a stupid question, is there any species that can almost interbreed but have birth defects or other problems? Or is it an all or nothing kind of thing?

I was wondering about one thing: why the species are so separate, and we don't observe a continuum of genomes? Or do we?

How did he just condense 3 of my prof's lectures into 7 minutes

Bill Nye for college students. Thank you, Professor

Watching this the day before my final bio exam

I'm trying to think how a ring species, such as the ensantina, would fit into this categorisation of speciation. It's both a binary speciation and a gradation, allo and sympatric. Anyone have any thoughts?

Hey professor, have to say when I saw the strange words in the title i immediately thought you had specadonkadoodlisticosis due to streashamantaphobaloma. But then I watched it and realized you weren't just makylakyhummerdistica them up. 👍

I love you!

what is the difference between sympatric and parapatric help

Sir plz do live chat...

What about African Mbuti Pygmies. Can they successfully breed with another breed/subspecies/race?

Why would habitat isolation not be considered allopatric?

How can we get these slides?

nice

Let's make some new species is my new pick up line

Dunning-Kruger types are a different species.

if gene flow has to exist for it to be a species, does that mean bacteria really aren't species?

This video was speciatiawesome! 👍

From india,

You said speciation takes 1000+ years. Speciation can be instant for some plant species

low sound bro

Perhaps Parapatric Speciation is now occurring to Humans?

*Kent Hovind left the chat*

I wish some could translate it in Tagalog language because I really need to understand the modes of speciation... It was my report 😭

Uh oh, now the creationists are gonna get angry like the flerfers did.

Fantastic video as always. It's hilarious that most evolution deniers (such as AIG) accept speciation, but deny that it's literally the epitome of evolution.

I'm here because a creationist asked me a question today which I don't know the answer to: Shouldn't domesticated dogs be a different species than wolves by now? For ~16.000 years they've been isolated from wolves and heavily selected. Speciation still hasn't occurred. Does or doesn't the model predict that it should have?

ok so they are all influenced by prezygotic isolating mechanisms

Kent is turning into a tea kettle.

Science = Its like you have a Imaginary friend, You can't see him but you know he's there!!!!

What about Neanderthals and Homo sapiens. Both mated with eachother. And their kids were fertile. How's that possible

Hiii today am the first viewer

You forgot to include "Kind". Duh.

Tell this to Kent Hovind...lol

lol The first 6 or 7 pages of comments are full of "I can't wait for the creationists.. Yet no creationist responded. hehe

Interesting leap of faith at the end where speciation within a kind is somehow a precursor to macro evolution from one kind to another kind! Where is the evidence for that? There is none!

One of the first views. YEEET

I hope that kent hovind comments some laughable BS on this video

Any one of u from INDIA 🙄🥳💖

First!

Am I first?

Triggered creationists in 3...2....1.... 😀

bwnis

You look like you have no emotion when you just look at us and say stuff

I bet ya the creationist have a pet, of some sort, that's intermingled with other species. If so then they're defeating their own purpose. 🤯

Mules are fertile not sterile

Still doesn't explain how a fish became a frog.

PERIpatric and PARApatric?? Scientists SUCK at naming shit!!!