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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NVIDIA CEO's Warning on China Chip Warfare: Should Act with Caution
In a recent interview, NVIDIA CEO Huang Renxun issued a warning of the potential significant damage caused by the chip war against China. He pointed out that the export controls imposed by the US government on China's semiconductor technology have caused difficulties for US technology companies, preventing them from selling in important markets such as China...
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IPhone 15 has started trial production, with its appearance and configuration exposed. Apple fans may be disappointed
As the saying goes, "One minute on stage, ten years off stage", many things are finally presented because they have been prepared for a long time before, including the release of new phones. Although the preparation time for a phone is not as long as ten years, for some heavyweight flagship, planning may have started as early as a year ago, such as the Apple phone, Even before the release of the iPhone 14 series, news about the iPhone 15 had already spread from Apple suppliers...
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fierce! Best Mobile Phone Recommendation for 2023: Top 4 evaluated phones with skyrocketing cost-effectiveness
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Buy large memory instead of small: "12+256GB" is completely sufficient, with a minimum of 1599 and at least three years of use
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These five companies with charging stations are expected to carry the banner of rebound in the New Year
These five companies with charging stations are expected to carry the banner of a rebound in the New Year, as their performance is entering the fast lane. One of the companies saw a year-on-year increase of 415% in the pricing of charging stations in the first quarter...
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Huawei P60 plummeted by 1069 yuan, with 512GB+IP68+Beidou satellite news, giving Xiaomi Gravity a blow
In a saturated market, if a company's performance improves, it also means that the performance of other companies will deteriorate. The mobile phone industry is currently in this state, so when the news of Xiaomi's new flagship Xiaomi 13 Ultra going public and selling hot, other friends quickly feel pressure, especially Huawei, because it has always been in the domestic high-end flagship field, Huawei mobile phones have absolute advantages, and other high-end flagship brands under domestic brands cannot compare with them...
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As of now, a total of 13 phones equipped with 1TB of ultra large storage in 2023 have been inventoried
1 Galaxy S23 Ultra84nmCPU3.36GHz1+4+36...
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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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Why can we still succeed in entrepreneurship in the United States with a debt of 16 million people and 3.2 billion yuan? Because his father is the chairman of China National Chemical Corporation
Do you remember the ofo yellow car that was popular all over the country back then? Recently, its founder Dai Wei's successful entrepreneurship in the United States made a hot search, sparking a heated discussion among netizens.What netizens are most concerned about is Dai Wei, who has become the executor, and is also a scoundrel...
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The practical case of "Jointly Building a Community with a Shared Future in Cyberspace" in 2023 involves global practice in five major fields
On May 23rd, the International Organization of the World Internet Conference held a promotional event and member activity day in Beijing for the collection and promotion of leading scientific and technological achievements and practical cases of "Jointly Building a Community with a Shared Future in Cyberspace" in 2023.The "Practice Case Release and Exhibition Event" has been successfully held twice and has become an important platform for promoting international exchange and cooperation in cyberspace, and promoting the construction of a community with a shared future in cyberspace...
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Lu Weibing announced the "new machine" with 1TB of large memory for only 3099 yuan, as well as 2K direct screen and wireless charging
Since Lu Weibing took over the Hongmi mobile phone business, Hongmi mobile phones have also been moving towards a more stable and high-end development path. At the same time, they also have an absolute "leading position" in the mid-range cost-effectiveness market...
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