Why can yellow and white people have children without reproductive isolation? Do humans really have species?
Today, I want to talk to you about a very interesting topic:Why can the white, black and yellow people on the earth combine with each other and have children without reproductive isolation?This question seems simple,The mysteries of human origin and evolution are actually involvedLet's explore together!Firstly, we need to understand what isReproductive isolationReproductive isolationUnable to produce offspring, or the offspring produced are sterileReproductive isolationThe answer isReproductive isolationThe early lifestyle of mixed livingHighly developed cultural mindThe first reason is the kinship and stable fertility traits of human originOnly about 200000 years agoHumans on EarthEthnic differences mainly stem from variations in representational expression, such as skin color, body shape, etcAnd the reproductive system remains highly similarThe second reason is thatThe early lifestyle of mixed livingReproductive isolationReproductive isolationThe third reason isHighly developed cultural mindDeeply influenced by the environment and social cultureHumans can also bridge these differences through psychological and cultural cognitionCross racial or cultural heterosexual relationships to gain unique attraction and satisfactionSports abilityThese differences are mainly caused by environmental adaptation, gene drift, gene recombination and natural selectionSkin colorSkin colorDHair and eye colorHair and eye colorSports abilitySports abilityThe appearance differences between humans only account for a small portion of the entire genome (approximately 0.01%)Reproductive isolationThis greatly enhances human genetic diversityIt can realize the flow and integration of cultural genes among peopleReproductive isolationWhich country's girls do you like best? Why?...
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Hua Chunying shares a video criticizing the dual standards of the United States: it's better to say that only the United States can talk about national security, while other countries cannot
On the 21st, the Chinese side announced that the products sold by American chip manufacturer Meguiar in China have not passed cybersecurity censorship, and the United States has taken the opportunity to "double label" again, hyping up the so-called "Chinese economic coercion". Regarding this, Chinese Assistant Foreign Minister and spokesperson Hua Chunying refuted on Twitter on the evening of the 24th, saying, "It's better to say that only the United States can talk about national security, and other countries cannot...
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A three-year contract for servers, let's talk about building personal websites from scratch (super detailed)
Time flies like an arrow, and the sun and moon fly like a shuttle. I didn't expect the three-year contract to arrive so soonHahaha, I took the wrong set...
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The first beautiful robot in China, with a humanoid appearance and lifelike features throughout the body
Guys! I am delighted to introduce to you today the first beautiful robot made in our country! This robot is so realistic that you might even think it's a real human!(The mini program has been added here, please go to Today's Headlines client to view it)Our robot team comes from the University of Science and Technology of China, and they spent a lot of time and effort to develop this female robot called Jiajia.Jiajia has a perfect appearance, thanks to her designers' research and development based on Chinese aesthetic standards...
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360 Outdoor Ball Machine 6Pro Short Test
As a leader in the domestic security field, 360 has been deeply involved in various fronts of security products and leading the trend of various products. The surveillance market, which has a large market share, has always had pain points of strong professionalism, high costs, and high construction difficulty, making some small places with a strong demand for video surveillance very awkward...
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Which is more accurate, Baidu or Gaode Maps? Old driver: Going out of the city, the gap is not as big as usual!
EconomicsEditor | Wu YoufollowWith the continuous development and construction of major cities, it is difficult to remember the intricate roads of cities solely by memory. Without navigation, once you leave your familiar environment, it is easy to get lost...
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The Tesla ModelY I bought two years ago has traveled 100000 kilometers. Let's talk about my driving experience
It is estimated that this is the first Tesla ModelY in Guangdong that has already driven 100000 kilometers. The 21 models purchased back then were equipped with 19 inch wheels and had a 100 kilometer acceleration of 5...
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1+11: Gorgeous appearance, outstanding performance, and powerful photography skills
As a digital enthusiast, I have always been looking forward to the new generation of flagship phones. And today, I will bring you the highly anticipated One Plus 11 phone...
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Two passengers refused to get off the ride, but the outcome came
On the afternoon of the one8th, Sister Wang, who was running an online ride in Hangzhou, reported that she had pulled two passengers the day before, a father and daughter, but later had an argument with each other. The other party stayed in the car and refused to get off, which had already exceeded two4 hours at that time...
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100 billion without waste! Alibaba Releases the World's Fastest AI Chip, Foreign Media: This is Terrible
The world's highest performance inference AI chip, including the Light 800, has been officially released, based on RISC-V and Alibaba's own algorithms, with a performance of 78563IPS and energy efficiency of 500IPS.Like Huawei's "Kirin" chip, the significance of Alibaba's "containing light" chip is also very profound,'Hanguang' is one of the three great divine swords of ancient times,Containing but not revealing, light but not shining...
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This feature is recommended to be turned off! You can transfer your money without entering a password
Recently, there have been multiple cases of theft and theft across the country due to the victim's activation of the confidential payment function.The fraudster added the merchant's WeChat friends to communicate through WeChat, and then guided the merchant to display the Alipay collection code in the WeChat video, so that the merchant could refresh the Alipay collection code...
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My concerns about future technology
We are currently in the 21st century of humanity, and it is said that human technology is rapidly developing.But I have many concerns about the future technology of humanity...
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