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Пікірлер
@aasdaasd2121 7 күн бұрын
Evolution is a lie
@timhaug6900 15 күн бұрын
While I don't disagree with the data, the genetic explanation makes no sense.
@pleiotropy 12 күн бұрын
In what way? What doesn't make sense to you?
@ebob4177 Ай бұрын
😢 🙂
@vincentsanchez7603 2 ай бұрын
Biology degrees and also any job you get will pay you whatever you want. It just takes time and experience and the guts to tell people what you deserve. Also with more money comes more responsibility, but you get paid for the work you produce. Take pride in your work and have some self respect. Biology degrees are definitely worth it and if you look into getting your MLT or CLS it will pay upwards of 80-130k and you don’t need a grad MS degree just a bachelors and the MLT or CLS license
@privateaccount4460 2 ай бұрын
so quick gg
@TariqMKDS 2 ай бұрын
that’s not what Professor Charles Xavier said 🗣️🗣️🔥💯💯🙏⁉️⁉️⁉️
@justjusticeful 2 ай бұрын
The male ligon can not breed but female can
@linuxgirl_ 3 ай бұрын
May I ask what book you are referring to in the examples when you say "the book?" (e.g. time 8:16)
@BetoCruz-nk7mr 5 ай бұрын
0:05
@OnenThomas-cw7py 5 ай бұрын
Regina thomas Poland ❤😂🎉😢😮😅😊
@OnenThomas-cw7py 5 ай бұрын
Mate yellow yoke Regina thomas ❤😂🎉😢😮😅😊
@mikelreese6320 6 ай бұрын
Well made video script. Kept me intrigued the whole time.
@privacyvalued4134 8 ай бұрын
I do find it a little annoying to have to rely on KZfaq to find sufficient information about statistical functions - a job that Wikipedia should be doing infinitely better. The math/stats oriented sections on Wikipedia are somehow awful, unreadable, _and_ incomprehensible all at the same time. This video saved me a lot of pain. Thank you for putting it together. Unfortunately, there is only a tiny audience who needs the information that I was seeking and found in this video so it probably won't exactly go viral.
@privacyvalued4134 9 ай бұрын
The output of the heteroscedastic t-calc formula is roughly "in the neighborhood" but not sufficiently accurate, only producing around 2 decimal digits of precision in Microsoft Excel. The homoscedatic and paired t-calc formulas in your videos produce identical results in Excel (15 digits of precision). So we can hypothesize that either the heteroscedastic formula in this video is wrong _or_ Microsoft Excel is wrong. Wikipedia uses similar notation to what is shown in this video (but far more obtuse - thanks Wikipedia!), so I'm inclined to believe and conclude that _the heteroscedastic formula in this video is correct_ and that _the Microsoft Excel T.TEST() function produces incorrect output_ for the heteroscedastic t-test.
@SadafAliK 9 ай бұрын
In the titanic example you have the "b" value where the "c" value should be I believe. Thank you.
@idelsagil9129 9 ай бұрын
Sirenians 0:59 Marsupials 3:22 Monotremata 4:25
@idelsagil9129 9 ай бұрын
Lagomorphs 0:47 Xenartha 2:47
@idelsagil9129 9 ай бұрын
1:36 1:39
@salamandercourtship9949 11 ай бұрын
Sewall not Sewell
@pleiotropy 11 ай бұрын
Right you are. I've fixed the typo in the title. Thanks :)
@fakhrihusaini2424 11 ай бұрын
good video sir, thank you
@pleiotropy 11 ай бұрын
You're welcome, glad you enjoyed it :)
@DinkyPatel-vx9sf 11 ай бұрын
Your video was understandable but your hand writing was little hard to understand
@ryleeortivez3217 11 ай бұрын
You should consider updating this in a post COVID world.
@pleiotropy 11 ай бұрын
I do plan to update the videos as I go, but covid is a nice example of one of the things I talk about in this video. Since covid kills very few people (as a percentage) and is asymptomatic in so many, that's a big part of why it spread so well. If it killed more and always had severe symptoms, then it would have spread more slowly.
@MuadibGodEmperor Жыл бұрын
This is a wonderful video, and super helpful for someone who is going to be going into a biology major soon, but my only complaint is the music, it was so loud that at times it was hard to hear your points. Other than that, thank you so much for the great video!
@pleiotropy Жыл бұрын
Glad you liked the video. As for the music, unfortunately KZfaq does an auto-adjust which can sometimes raise the background volume even when you make a video with soft background music.
@user-pl9ge5in4v Жыл бұрын
Lezgaur MS Students
@Jack-py2jr Жыл бұрын
Thank you!!!
@pleiotropy Жыл бұрын
You're welcome :)
@beyaserrano5477 Жыл бұрын
thank you for this! i’m going to biology on september:)
@pleiotropy Жыл бұрын
You're welcome, glad you found it useful :)
@ethar3059 Жыл бұрын
This is a great explanation! Thanks a lot
@pleiotropy Жыл бұрын
Thank you, I'm glad you found it useful :)
@owlytedailer-sg5cq Жыл бұрын
3:37 where can I find this phylogeny
@jacktravers5049 Жыл бұрын
Good stuff
@pleiotropy Жыл бұрын
Glad you enjoyed the video :)
@capridenotoir4607 Жыл бұрын
Thank you! Super nice video❤
@pleiotropy Жыл бұрын
Glad you liked it. :)
@adnkar5055 Жыл бұрын
the simplest explanation i found on KZfaq, and the best one.
@pleiotropy Жыл бұрын
Glad you appreciated it :)
@cynthiamiranda5081 Жыл бұрын
The pdf powerpoint has all the info in one sheet which makes it really confusing to read. How can I see each power point individually? or maybe just convert it?
@archjanasivasuthan6252 Жыл бұрын
This is amazing!! Thank you :)
@pleiotropy Жыл бұрын
Thank you very much, I'm glad you liked it :)
@steli0310 Жыл бұрын
thanks for making me extremely confused.
@jeromejackson1701 Жыл бұрын
What the fly doing😐
@mihirdesai1413 4 ай бұрын
Hopefuly me soon
@SudhirKumar-mh8ud Жыл бұрын
Excellent. Very nicely explained. Handy for me to explain the concept to my students. Keep it up
@donotbebiased6987 Жыл бұрын
understood it in 1 shot
@pleiotropy Жыл бұрын
Fantastic :)
@meh1542 Жыл бұрын
But isn't there a mutation type known as subsitution mutation? Wouldn't using the term for a different meaning complicate things? Nonetheless, i was able to understand polymorphism through your video. Thank you.
@everythingispossible2258 Жыл бұрын
Can you discuss the effects of females’ mate selection while on hormonal birth control? Lately, I’ve seen some discussion about this and the possibility on issues since the hormones influence the females to choose mates with less typically masculine features. Thank you.
@nezafatianamir Жыл бұрын
Is Sexual Selection for baby-face, selected itself by the advantage of having larger brain? I think the question can be answered by asking another question: Does peadomorphosis happen for all features of an organism at the same time, like if I am peadomorfic for some reason I should have all the features of a child, like voice, body proportions, etc.? This is my question....
@mrrabbi5147 Жыл бұрын
always X(m,n)=X(row,column)?? or X(m,n)=X(column,row)
@pleiotropy Жыл бұрын
The first one, row then column.
@mrrabbi5147 Жыл бұрын
❤️❤️
@pontifixmax Жыл бұрын
All matter, living or otherwise, eventually ceases to exist. This is a consequence of entropy. The more time moves forward, the more everything becomes disordered.
@pleiotropy Жыл бұрын
It's true that entropy increases in the overall system, but localized parts can become more organized (at the expense of other parts). As an example, the Earth becomes more organized (e.g., life etc.) because the increase in entropy of the sun outweighs it in the system as a whole (i.e., the solar system).
@neildutoit5177 Жыл бұрын
The biggest frustration I had with statistics is that standard deviation is presented as the primary descriptive statistic for measuring spread. Standard deviation has useful mathematical properties for further calculations when doing inference. But for description, IMO the mean absolute deviation is just obviously superior. It's intuitive. You know what it means. And it makes sense even when the data distribution doesn't fit any known distribution (non-parametric). It's more robust, in the technical sense. The only answers I could ever get from stats professors about why they were doing this was (a) mean absolute deviation is not differentiable and (b) standard deviation tells you how far out to go on the distribution to cover x % of it. (a) is only a good reason when dealing with inference. (b) is only true when you know the distribution, but in those cases you can just use mean absolute deviation anyway because it also covers a fixed proportion of the distribution. When there is no distribution, standard deviation is impossible to interpret. Mean absolute deviation is not. What do you think?
@neildutoit5177 Жыл бұрын
Thank you for this. The part that I have difficulty understanding is that, mutations seem somewhat rare, a mutation that happens to be in a gamete seems like it will happen very seldom, a mutation that happens in a gamete, and produces an advantage, seems like it will almost never happen, and a mutation that happens in a gamete and produces an advantage and then that organism doesn't get killed just due to bad luck before it can reproduce, seems like it should happen almost never. Are there other sources of new genes other than mutation? Are there other "fuels" for evolution other than new genes? Or are mutations just a lot more common that I'm assuming? Thank you.
@pleiotropy Жыл бұрын
Mutations are the only "fuel" for evolution, but there are many different kinds (e.g., change of nucleotide, duplications of a length of DNA, etc.). They are extremely rare for any given location, but the genome is huge, populations are often quite large, and this has been going on for millions of years = lots of fuel. As you correctly note, most new mutations are lost due to random chances, but there are lots of mutations happening all the time.
@neildutoit5177 Жыл бұрын
@@pleiotropy Thank you for the response. The different kinds of mutations is interesting I'll look into that. I'm going to follow up with more questions but feel no obligation to reply if you busy. 1) The "millions of years" factor, my understanding is that the reason why most big changes take millions of years is not because evolution is slow but because the environment usually changes slowly, but that when there is a sudden change in an environment then many species can undergo a large number massive changes often in only a few dozen generations. So like, when trying to understand how evolution is able to move so quickly, I think it's a bit besides the point to say millions of years = lots of fuel since even in tens of years there appears to still be more than enough fuel if that fuel is actually needed. So I'm still thinking there must be a hell of a lot of mutations for that sort of thing to be possible? 2) Do we have any idea of quantity here? So like, for example, in lets say a dog: (a) what order of magnitude of mutations are you getting in the dog in its life overall and (b) what percentage of those are in the gametes and Like are we talking dozens? Hundreds? Millions? Billions? And what sort of tradeoff is there with cancer? Is it more fuel = more cancer always? Or can you have relatively large number of mutations without disproportionately large amount of cancer? Thank you again really appreciate it.
@Tokken12 Ай бұрын
What’s a gamete ?
@thevirtualguy5074 Жыл бұрын
You are doing a great effort here, Thanks alot!. I think the corrected Alpha (minute 10:00) is not the right value.
@wacNTN Жыл бұрын
Another very well done and useful video. Thanks!
@pleiotropy Жыл бұрын
You're welcome :)
@wacNTN Жыл бұрын
Explained very well. I've been searching for explanations that make stats more clear and so far, these videos are really helping me! Thank you!
@pleiotropy Жыл бұрын
Thank you, glad you found it useful. Good luck with stats :)
@WhiteRussianBC Жыл бұрын
Great video
@pleiotropy Жыл бұрын
Glad you liked it :)
@gabrielamendoza8016 Жыл бұрын
Hello, Your video has helped me a lot. I want to ask you if you know how to make the relationship between 16s rrna gene tree and 23s rrna gene tree. Thank you so much