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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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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Funeng Technology: SPS technology will be synchronously planned in new production capacity and plans to gradually iterate existing production lines
On May 22nd, Funeng Technology stated on the investor interaction platform that the SPS technology released by the company will be synchronously planned in new production capacity, and plans to gradually iterate existing production lines, fully promoting the industrialization process of SPS technology. At present, the company's capacity planning and expansion work is steadily progressing as planned...
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The 618 promotion is approaching, and the price of digital products has plummeted. I recommend these Snapdragon 8+phones
BEYOND-FLAC5:19Representative from the Digital DepartmentAlthough the Snapdragon 8Gen2 has received high praise for its performance and has become the standard chip for many high-end smartphones in 2023, its relatively high price is not suitable for ordinary consumers.If you don't need to pursue ultimate performance, the Snapdragon 8+released in the second half of last year is also a good choice...
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Exposed iPhone 15 has completed testing: mass production begins in July, with the first batch of 90 million units in stock
As one of the top smartphone brands in the world, Apple has attracted the attention of many consumers. In addition to the currently available iPhone 13 series, Apple's most popular product among consumers recently is the iPhone 15 series...
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Interpretation of Alibaba Cloud Database ClickHouse Products and Technologies
ClickHouseClickHousetroubleshootClickHouseMySQLODPSClickHouse2023 MySQL x ClickHouse ClickHouseClickHouse2019ClickHouseClickHousePPTClickHouse2019DB-EngineClickHouse2829DB-EngineClickHouseGitHubStarClickHouseClickHouseClickHouseShardingClickHouseSharding keyPushPushClickHouseClickHouseMeterialized MySQLReplacingMergeTreeMergeTreeClickHouseClickHouseSQLClickHousetblClickHouseSharding keyrand Sharding keyClickHouseBlockClickHouseClickHouseLSMIOClickHouseP2PShardingrandgroup byjoinlog ajjClickHouseDeleteUpdateClickHouseClickHouseJKClickHouseShardingClickHouseOLAPMergeTreePARTdataprimary key index.bin...
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Chinese chips are despised by Russia? Self production of 90 nanometer SIM cards is just the beginning
Russian state-owned enterprise Mikron will produce SIM card chips, and Russian telecom operators are already testing their software. The chip will be produced according to topology standards of 180 nanometers and 90 nanometers...
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Deep research on the lithography equipment industry: the pinnacle of semiconductor equipment, the pinnacle of icebergs waiting for the dawn of domestic production
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Why are Pinduoduo products so cheap to sell? Uncover the reasons behind cheap prices and increase knowledge
With the continuous development of internet technology, e-commerce has greatly changed our livesAmong them, Taobao and JD.com, which were the first to rise, almost monopolized the entire market, but Pinduoduo emerged as a new force, tearing apart a path of blood and dividing up a large piece of cake...
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