Hi! thanks for the great lesson. I've a little question though, in the beginning you said for speciation to happen a faction from within a species must not share its genetic material with the rest of the population through reproductive isolation, but my question is, if two organisms are not mating and not producing fertile offspring, doesn't that mean that they are already members of different species??
Great question. There is a difference between "could" mate and produce viable offspring and "are" mating and producing viable offspring. For speciation to occur, a group that could mate needs to be separated in some way so that they are not mating.
@@2MC Great! I get it now! So it's like the two groups are not technically different species just yet, but they will be some period of time down the line, through reproductive isolation. So reproductive isolation is a mechanism of speciation and not a set of criteria to distinguish between members of already different species (that's what I used to think), right? Thanks for clarifying!
Heyyy, that is one of my discussion topic choices for my plant bio class. This article helped me understand prezygotic isolation barriers better: www.ncbi.nlm.nih.gov/pmc/articles/PMC2607309/
2 Minute Classroom arithmetic sequences and series. a sequence of numbers such that the difference between the consecutive terms is constant. Like 2, 4, 6, 8..
But u didn't say how these isolation leads to speciation ... How do they become a new species when no new alleles are introduced in them? They are literally isolated frm each other but how do new species form?
Two reasons, they have different alleles in each group and their new environment may favor some alleles over others. Two, since they are separated any new mutations in their alleles will affect one group but not the other, and thus, over millions of years, you can get new species.
if testis of a male rabbit mature in December month and ovary of female mature in January month for sexual reproduction but reproduction does not occur it is an example of A. Temporal prezygotic isolation B. Mechanical postzygotic isolation C. Gametic solution D zygotic isolation
I wanted to ask that in parapatric speciation there is an extreme change in habitat which leads to reproductive isolation right, so why don't this apply to humans like if this applies then one living in northern areas could not breed with the one living in southern areas?
There has to be complete separation for a long time. Homo sapiens are a relatively young species. Additionally, humans today move/live all over, and thus, spread their DNA all over, so it's extremely difficult to completely isolate a group of humans. Does that make sense?
Because a Mule is infertile, so it is technically not a new species. In order to be a new species, it must be able to mate and produce viable offspring.
Hi. I love your videos and I want you to continue making videos. I want to make my own and I will soon because I got inspired by your videos like the channel intro one. Do you want to collab?
Collabs are great, but you don't have any content uploaded yet. Contact me when you have some vids up so I can see them. Also, one of the biggest benefits of collaborating is to reach the audience of the other RUclipsr and thus grow your subscriber base. You don't have much of a subscriber base, so you should work on growing that before collabing as well. Hopefully I hear form you in the future and we can get something done together.
speciation is such a finicky idea. imo, it should only occur when a species can no longer mate with another species via genetic incompatibility. (i.e chromosomal disparity). if it can mate, its the same species. sub species shouldn't be speciation.
Continue your channel is one of my favourite channels. Support from Egypt
Thanks for your support!
You saved me man. I'm impressed how good some people can explain, respect
Bro! You are great!! so much simpler than what my professor explained to us. Keep doing this. I enjoyed your sketching and color and pictures.
Thanks Joe, sometimes professors complicate things.
Hi, did you ever do the video on allopatric and sympatric speciation
Not yet, but it's great to know there is interest in the video!
Can you explain about gene editing molecular tools in simpler way
I'm looking for questions about reproductive isolation and speciation😥😥 do you have??
Hi! thanks for the great lesson. I've a little question though, in the beginning you said for speciation to happen a faction from within a species must not share its genetic material with the rest of the population through reproductive isolation, but my question is, if two organisms are not mating and not producing fertile offspring, doesn't that mean that they are already members of different species??
Great question. There is a difference between "could" mate and produce viable offspring and "are" mating and producing viable offspring. For speciation to occur, a group that could mate needs to be separated in some way so that they are not mating.
@@2MC Great! I get it now! So it's like the two groups are not technically different species just yet, but they will be some period of time down the line, through reproductive isolation. So reproductive isolation is a mechanism of speciation and not a set of criteria to distinguish between members of already different species (that's what I used to think), right?
Thanks for clarifying!
Can you please do a video on Balanced polymorphism and its variation? Thanks!
We just discussed this earlier, such a coincidence. I love your videoss!!
That's awesome! And thanks for the love!
we are only doing 3 iso barriers: eco, geo, and mechanical. How do I apply that to this?
Heyyy, that is one of my discussion topic choices for my plant bio class. This article helped me understand prezygotic isolation barriers better: www.ncbi.nlm.nih.gov/pmc/articles/PMC2607309/
Thanks @Tay O! Love seeing help in that comments.
can you please do sequence and series? Thank you! you explain better than my teacher. love from Indonesia
Thanks Saffanna! Can you explain a little more about sequence and series? I'm not sure what you mean.
2 Minute Classroom arithmetic sequences and series. a sequence of numbers such that the difference between the consecutive terms is constant. Like 2, 4, 6, 8..
May I ask if you have a video about hybrid breakdown? Can it be solved?
Nice and easy. What a legend.
You're too kind.
Great explanation...follower from india❤❤❤
best channel ever! THANK YOU!!!!!!!!!!!!!!
You're too kind.
i love how you explain, it helped a lot!
so much more helpful than articles that use big words that my simple dumb brain can't understand lol! thanks man!
No big words needed here. And I'm confident your brain is just fine! (even I failed classes in school)
Liked and subscribed!
Thank you from Texas!
You are welcome!
Hello, which app do you use to do this wonderful videos?
But u didn't say how these isolation leads to speciation ... How do they become a new species when no new alleles are introduced in them? They are literally isolated frm each other but how do new species form?
Two reasons, they have different alleles in each group and their new environment may favor some alleles over others.
Two, since they are separated any new mutations in their alleles will affect one group but not the other, and thus, over millions of years, you can get new species.
thank you very helpful for 8th grade work
temporal isolation is the same thing as Seasonal isolation?
Seasonal isolation is a form of temporal isolation.
if testis of a male rabbit mature in December month and ovary of female mature in January month for sexual reproduction but reproduction does not occur it is an example of
A. Temporal prezygotic isolation
B. Mechanical postzygotic isolation
C. Gametic solution
D zygotic isolation
That would be temporal isolation, because sexual reproduction is not occuring due to a temporal (time-based) event.
Great job explaining.
Thanksss
I wanted to ask that in parapatric speciation there is an extreme change in habitat which leads to reproductive isolation right, so why don't this apply to humans like if this applies then one living in northern areas could not breed with the one living in southern areas?
There has to be complete separation for a long time. Homo sapiens are a relatively young species. Additionally, humans today move/live all over, and thus, spread their DNA all over, so it's extremely difficult to completely isolate a group of humans. Does that make sense?
What if we isolate a group of humans.lets suppose then would it be applying then?
great video, although what a tease with the allopatric speciation vs sympatric!
I am a bit of a tease. The video is forthcoming, I hope to have it out before the end of the year.
thank you for your great work.
Just saved me 8 hours of studying my bio teacher aint teach me nothin
How reduced hybrid fertility become barrier since a mate between donkey and hourse reproduce mule??????
Because a Mule is infertile, so it is technically not a new species. In order to be a new species, it must be able to mate and produce viable offspring.
Literally awesome!!❤
Glad you think so!
Very helpful❤
Great video
Thanks man!
How do you make these animinated videos
this is great!
No Alex, you are great!
Thank you!
You are welcome.
very informative & great videos, but you do sound very sleepy lol
Haha, i'll try to work on that one.
Hi. I love your videos and I want you to continue making videos. I want to make my own and I will soon because I got inspired by your videos like the channel intro one. Do you want to collab?
Collabs are great, but you don't have any content uploaded yet. Contact me when you have some vids up so I can see them.
Also, one of the biggest benefits of collaborating is to reach the audience of the other RUclipsr and thus grow your subscriber base. You don't have much of a subscriber base, so you should work on growing that before collabing as well. Hopefully I hear form you in the future and we can get something done together.
Great 👍💙👆
thank uuuuuuuuu
You are so welcome 👍
Can you reply to my question below?
Just did it :)
I'm a green unicorn
Really? And this whole time I thought they only came in red.
liked
thx
🙄👆🏽
speciation is such a finicky idea. imo, it should only occur when a species can no longer mate with another species via genetic incompatibility. (i.e chromosomal disparity). if it can mate, its the same species. sub species shouldn't be speciation.
700th like
I had no idea this video had so many likes! Thanks for making it 700.
Thank you!
You're welcome!
Thank you!