Watch: Lions, Africa’s iconic predator, have returned to the plains of Liwonde National Park in Malawi for the first time in 20 years! A total of nine lions have just been reintroduced to Liwonde (from South Africa and from Majete Wildlife Reserve also in Malawi), through a series of translocations to return the species to the park. Five additional lions were also translocated to Majete Wildlife Reserve from South Africa to increase the genetic diversity of the reserve’s pride. Lion populations have declined by over 90% over the last 100 years as a result of habitat loss and fragmentation, lack of prey, human-wildlife conflict and poaching for the illegal wildlife trade. Now, fewer than 20,000 lions remain across Africa, and have gone extinct in 26 African countries. But through initiatives such as these, Malawi is providing sanctuary for wild lions and is bringing them home. This extraordinary initiative was made possible with support from the Dutch Government, the Lion Recovery Fund, the Leonardo DiCaprio Foundation and Leonardo DiCaprio. The return of these lions is part of a larger predator restoration initiative for Liwonde, where cheetahs were also reintroduced last year. Since 2015, African Parks along with the DNPW Malawi have drastically reduced illegal activity; almost 31,000 wire snares have been removed, wildlife conflict has been reduced and now tourism is on the rise, positively impacting local people. Projects like these show that with determination, political will and community and donor support – we can create a better future where nature’s return benefits both people and wildlife. Click here to read the full story: https://www.africanparks.org/lions-return-liwonde
同時也有1部Youtube影片,追蹤數超過147萬的網紅Kento Bento,也在其Youtube影片中提到,Get ‘Asiany’ Merch at our new merch store!: https://standard.tv/kentobento Support us on Patreon: https://patreon.com/kentobento ★ Why Asians Are '...
genetic diversity 在 中央研究院 Academia Sinica Facebook 八卦
你在路上應該沒看過跟你長一模一樣的人吧?👤👤
人類基因不會百分百遺傳,主要是因為人類的 #遺傳多樣性 靠父母染色體的配對跟互換,當🧬DNA互換不完美時就會發生基因變異。其中,DNA互換時負責在旁邊加油添醋,阿不是,是加油打氣的催化酵素叫做 ⭐DMC1⭐
雖然父母染色體的DNA序列很相似,卻不完全相同,但是DMC1卻可以協助不完美的DNA配對並完成完美互換!為什麼DMC1可以做到呢?㊙中研院的秘密武器 #高解析度冷凍電子顯微鏡 最近看穿這一套戲法!
🎯中研院與臺大研究團隊透過冷凍電顯技術,解出 #原子級解析度 的DMC1-DNA複合體結構,看到DMC1蛋白和DNA彼此相互作用時的分子細節。發現在DNA錯誤配對的位置,DMC1藉由結構上較大的空間與支持,允許DNA不完美配對與互換。
此發現未來對於因DMC1突變造成的不孕,及染色體分配不均而導致的疾病,可望提供分子層次上的解釋。
#中研院 #臺灣大學 #生化所 #何孟樵 #蔡明道 #冀宏源 #李弘文 #遺傳 #染色體 #冷凍電顯
________________________________
🔬幫劃重點:沒有這一台,可能就看不到了🔬
高解析度冷凍電子顯微鏡(cryo-EM)是現今結構生物研究最具發展潛力的技術,能在 #原子尺度,快速且不破壞性地觀察生物分子。簡單來說,一般光學顯微鏡頂多百倍,冷凍電顯則能看到十萬倍。
📍還是不懂? https://research.sinica.edu.tw/tsai-ming-daw-cryo-electron-microscope/
📍論文連結:https://www.nature.com/articles/s41467-020-20258-1
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Genetic diversity is a key driving force of evolution. During homologous recombination, chromosomes from father and mother will pair together to exchange the genetic material leading to genetic diversity. In the process of chromosome pairing, the DMC1 protein is the key enzyme that catalyzes the DNA exchange reaction. What puzzles scientists is that although the chromosomal DNA sequences of the father and mother are similar, they are not completely the same. How DMC1 can tolerate the imperfection? What is the underlying mechanism? The research teams from National Taiwan University and Academia Sinica used a newly established cryo-electron microscopy facility and biochemical experiments to show that the DMC1 protein possesses a unique structure to accommodate imperfect pairing. The research results were published in the top-tier journal Nature Communications in January, 2021.
‧Article: https://www.nature.com/articles/s41467-020-20258-1
genetic diversity 在 Engadget Facebook 八卦
It should reveal more about diseases and our species' variety.
genetic diversity 在 Kento Bento Youtube 的評價
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★ Why Asians Are 'Cuter' (Scientific Breakdown): https://youtu.be/QPrP3Y4SO_E
★ Has McDonald's Conquered Asia?: https://youtu.be/pgHiRsk2UjY
★ Where Are The Asian Borders?: https://youtu.be/vPupwlZlNMY
★ 'Asian Eyes' Are More Common Than You Think: https://youtu.be/WxTnVWgOGLc
★ How Would You Escape North Korea? (The 7 Choices): https://youtu.be/6A0ZOkMDLw0
★ What Kind of 'Asian Eyes' Do You Have? (Test Yourself): https://youtu.be/wsNaBwrL9hg
★ 10 REASONS Why Asians Don't Get FAT: https://youtu.be/xIqJR6xfMro
★ The Asian Accent Test | Can You Tell Asian Accents Apart?: https://youtu.be/xiWmdWXYle8
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WHY ASIANS ARE YELLOW-SKINNED
Some people find yellow an offensive or racist term to describe Asians for various reasons.
"Asians are not actually yellow!"
"Hey, Asians aren’t cowards!"
"There is no ONE Asian colour!"
"Did you know Yellow or Yellow Peril is rooted in historical irrational racist perceptions, that the West had for the East?"
"Labels divide people. We need fewer labels, not more!"
And then there’s the other viewpoint, that 'Yellow' isn’t offensive:
"Why is calling someone white or black not racist, but then when you call them yellow, all of a sudden..."
"Yellow just describes ones' appearance, like calling someone skinny, short, tall, dark-haired…"
"...but Asians actually have a yellow hue to them!"
"Cmon, Asians even call themselves yellow!"
Actually that last one is interesting. Do Asians themselves find Yellow offensive?
Well understandably there are South East Asians, Indians, Afghans, Iraqis who find it offensive because they are far from yellow. But I think, in saying yellow, most people are referring to East Asians anyway.
So do EAST Asians find Yellow offensive?
Recently Apple angered many Asian people by their creation of yellow-shaded emojis, part of their attempt at racial emoji diversity - and many Asians took to Twitter to voice their concerns.
But, hey wait, I’ve heard Asians refer to themselves as Yellow too.
"Yellow Power!"
"Everyone’s got yellow fever!"
"Check out the yellow bullet! (Liu Xiang, Gold Medalist)
"...one of China’s legendary cultural heroes, The Yellow Emperor."
Okay, so the jury is still out on just how offensive it is; but who do we blame for all of this?
Some think it’s to do with the fact that Asian civilisation first developed around the Yellow River in China.
But after doing some research, I found this guy, Johann Friedrich Blumenbach (1752-1840) - a German naturalist, physiologist and anthropologist who was the first to explore the study of mankind as an aspect of natural history.
He came up with the five color typology for humans - the white race (Caucasians), the black race (sub-Saharan Africans), the brown race (Pacific Islanders), the red race (American Indians) and of course, the yellow race (East Asians).
And ever since then, the idea of Asians as yellow has been ingrained in our heads. Look no further than the Power Rangers. Specifically, the yellow power ranger.
Going back to the original question - Why are Asians yellow? (or yellowish)
The answer, is genetic. But more specifically, Asians have more carotene pigments in their skin, and carotene imparts a yellowish coloration.
Also Asians have a low body mass index (BMI) but higher body fat percentage; and much of this fat lies just under their skin. Fat tends to be yellowish in nature, so Asian skin often looks yellowish.
In comparison, Caucasians have less carotene and a much thinner layer of fat under their skin; so they’re less yellowy and more white.
At the end of the day, personally, I don’t really take much offence to being referred to as yellow. But then again, I do make videos on youtube about sensitive racial matters, so I do have to have thick skin (under which there is a layer of yellow fat).
Whatever color we are, it doesn’t really matter. We’re all the same. We are all interchangeable.
Especially when it comes to The Simpsons, the show where white people are yellow, and yellow people are white.
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