However, Siamese fish do not become such vivid “works of art” on their own. The color and shape of the fins of this fish are the product of a millennium of breeding. According to Yi-Kai Tea, a PhD student at the University of Sydney who studies the evolution and characteristics of fish species, “Literally, the development process of this fish is almost the same. with the domestication of dogs”. A new study, published in April in BioRxiv, finds that humans began domesticating Siamese fish at least 1,000 years ago through sequencing the species’ genome. During a millennium of careful breeding and crossbreeding, Siamese fish are now extremely diverse in appearance. However, this also means that wild, purebred individuals of this species must undergo major genetic changes. The authors of this study say that by sequencing and conducting genetic studies of the Siamese fish, they can gain a lot of information about how it was domesticated, bred, and genetically modified. The Siamese’s intricate coloration and “matchy” fins are the product of a millennium of carefully selected breeding. Yi-Kai Tea hailed it as “the first major study to help identify the genetic basis of beauty” in this fish. All 73 species of Siamese fish are native to Southeast Asia. But the most common species sold in aquarium stores and markets is the fighting fish. This strain is much more colorful than most other purebred varieties of the Siamese family. “The purebred Siamese will often look very different from the ornamental Siamese,” said Young Mi Kwon, a researcher at Columbia University and lead author of the study. “They have short fins, are somewhat duller in color and lack the prominent fin walking commonly seen in ornamental Siamese breeds.” While domesticated Siamese are usually very aggressive and do not live together, their domesticated individuals have a more peaceful disposition. “This may be because the Siamese aquarium lines were originally domesticated for fighting, like fighting cocks,” Kwon added. Siamese fish has a history of 1,000 years. In the late 19th century, breeders began to focus on creating varieties of ornamental fish, which later became extremely popular in the West. “This history has shaped the ornamental Siamese fish we see today, a truly magnificent fish with a fiery temperament,” commented Kwon. To determine the exact history of the formation of the ornamental Siamese fish we see today, Kwon and his colleagues collected DNA samples from purebred Siamese and house-raised Siamese fish, and then proceeded to analyze them. their genome sequences. “We were surprised by the evolution of the Siamese fish that lasted at least 1,000 years ago, which makes it one of the oldest known fish,” Kwon said. While previous studies have shown that Siamese fish were bred as early as the 13th century, recent discoveries have proven that they began to be bred long before that. The study also highlights why breeders are able to create dozens of different varieties of Siamese by color, from red, yellow and blue, to Siamese with large fins, small fins and even multiple colors per individual. Just imagine the new shape of a Siamese fish, it can completely be created and exist in reality. “Many traits, which breeders are selecting for, are regulated by very few genes that have a great deal of influence,” Kwon said. “This means that it won’t take a lot of cross-breeding to get them to have their own characteristics or traits that you want your fish to have.” The researchers also found that ornamental Siamese fish are genetically distinct from purebred Siamese fish. However, they were surprised to discover that the ornamental Siamese had crossed with purebred fish. This crossbreeding may have been the result of the Siamese being released into the wild, which could potentially undermine efforts to preserve the purebred of this fish. “The ornamental Siamese fish will most likely dominate the natural environment, if they are more suitable to the habitat than the purebred fish,” Kwon emphasized. Many purebred Siamese fish breeds are in danger of extinction and the main cause is habitat loss. By studying in more detail the evolutionary history of this fish, the researchers hope to improve our understanding of how other species are bred and genetically engineered. Although much remains to be learned such as how crossbreeding affects Siamese fish, genetic engineering has resulted in the creation of many splendid Siamese fish of stunning colors and shapes that were previously available. This may never have existed. Sapphire According to the New York Times

The recent Miss World Vietnam 2021 entrance tour continues the journey of interaction with students at Ton Duc Thang University. The event took place in conjunction with the Miss & Mister University Ton Duc Thang contest with the participation of Miss Luong Thuy Linh, runner-up Kieu Loan, President of Miss World Vietnam – Pham Kim Dung and Beauty Thuy Tien. Luong Thuy Linh became the focus of attention with a sparkling gold dress and a 3 billion crown. The original queen Cao Bang not only made the audience admire by her 1m22 long legs, but also by the ability to communicate “swallowing mic” during the exchange. She shared: “The beauty of spreading is that when you become Miss, your voice has more gravity. Linh believes that the crown is not only an ornament to make me more beautiful, but also a tool to help spread good things to many people. ” Runner Kieu Loan confidently transforms into a completely new style with individual pixie hair. The beauty deftly showed off the hot curves in the sleek evening gown design. With the overwhelming fan base at Ton Duc Thang University, runner-up Kieu Loan did not forget to “stir up” the beauty night’s stage with her powerful voice. The beauty Thuy Tien also strode to the meeting in a dress with high-cut lines and full-breasted design. It can be seen that the beauty of Miss Vietnam Beauty and Compassion 2018 is becoming more and more attractive and attractive. In order to directly find the brightest candidates, Ms. Pham Kim Dung, Luong Thuy Linh and Kieu Loan also participate in the competition as a “squat-proof”.

In human society, we give and exchange what we need to maintain life is an indispensable daily activity of each individual. More than that, from the perspective of the entire human race, commercial exchanges have become such an indispensable part of today’s world, so much so that each person forgets to depend on them so much that Come on. Just take a minute looking around the room you are sitting in, or look through the top of your desk and ask yourself how much of it is made by you yourself, and you have the answer. word. How commercial activities have an impact on the history of human society is summarized in the book: Trade history – How trade shaped the world ? (Original name : A splendid exchange: How trade shaped the world ) by William J. Bernstein. He is a neuroscientist, an expert in financial and investment theory, and also a researcher in economic history. The book focuses on two main contents: the first is the formation and development of commercial activities; The second is the impact of trade on the shaping of human society throughout history as well as the world today. WJBernstein recounts commercial history from the earliest steps, when people came up with the idea of ​​genius and it was also very natural to exchange what was in surplus for what they needed or liked but didn’t have, in when others have ego, it’s time for commerce to have shape and scale later on. The process of formation began from the cradle of human civilization in Mesopotamia to the formation of the oldest trade routes and then evolved into a complex network stretching from the Roman Empire in the west to the emperor. Han Empire in the East. Next was the disruption of East-West trade on the mainland as the two empires declined and Islam arose from the Middle East and spread influence, becoming the center of global trade for a long time. At the same time, maritime trade with the Indian Ocean was a major trade route that flourished, replacing the ancient Land Silk Road as the economic lifeblood of the world. Besides the overall picture of the ups and downs of trade history, WJBernstein analyzes the interaction between trade with political, social and other natural factors. For example, the geographical structural differences between the Mediterranean and the Indian Ocean lead to different economic-political, naval strategies thinking among Mediterranean civilizations (such as the Greek). Greece with civilizations participating in the Indian Ocean trading system (Islamic countries in the Middle East, Indian sub-states, Southeast Asia and China). At the same time, he offers interesting examples of times when economic, political and religious interests conflict, forcing rulers to make choices. For example, the famous story when Venice Governor Enrico Dandolo used all his tricks to bring the Crusader army to attack and sack Constantinople, Venice’s influential competitor, instead of attacking Egypt, his partner. commercial importance of Venice, as the Crusaders expected. And not only conscious human endeavors, but at times nature plays an important role in the course of history. The fourteenth century Black Death plague devastated both Christian Europe and the Muslim Middle East, but the consequences were different. The epidemic weakened feudalism in Europe, gave freedom of thought and trade a chance to develop, while at the same time making Islamic civilization severely irreversibly damaged, paving the way for turn in global trade advantage from East to West. In Trade history refers to characters, both famous and anonymous, who contributed to the making of commercial history. It was an anonymous Mesopotamian businessman whose letter on earth kept evidence of a transaction thousands of years ago. It was Vasco da Gama, it was Columbus, the restaurants that paved the way for Europe to regain control of the world. Or Richard Cobden, a pioneer in the fight for free trade thought in the UK in particular and around the world in general. Trading is not only about exchanging goods, but also about competing for the market, competing for monopoly on trading of goods with great profit. Contact between people belonging to far away countries also means the exchange of deadly pathogens. Merchant crews contributed to the spread of the Black Death in Europe. Spanish expeditions made many peoples of the Americas extinct because of the pathogens they carried. Competing for markets, fighting for strategic commodity resources has been the main cause of most wars from ancient times, from the Peloponnese to two bloody World Wars in the twentieth century. WJBernstein has neutrally recounted the story of commerce and its impact on human society, fully pointing out the bright and dark sides of this story. More importantly, we all know this is an ongoing story, and understanding the past is probably the best, if not the only, way to make the future of the dark side of trade possible. control is better, and on the bright side, commercial benefits bring people, to be promoted more thoroughly.

In human society, we give and exchange what we need to maintain life is an indispensable daily activity of each individual. More than that, from the perspective of the entire human race, commercial exchanges have become such an indispensable part of today’s world, so much so that each person forgets to depend on them so much that Come on. Just take a minute looking around the room you are sitting in, or look through the top of your desk and ask yourself how much of it is made by you yourself, and you have the answer. word. How commercial activities have an impact on the history of human society is summarized in the book: Trade history – How trade shaped the world ? (Original name : A splendid exchange: How trade shaped the world ) by William J. Bernstein. He is a neuroscientist, an expert in financial and investment theory, and also a researcher in economic history. The book focuses on two main contents: the first is the formation and development of commercial activities; The second is the impact of trade on the shaping of human society throughout history as well as the world today. WJBernstein recounts commercial history from the earliest steps, when people came up with the idea of ​​genius and it was also very natural to exchange what was in surplus for what they needed or liked but didn’t have, in when others have ego, it’s time for commerce to have shape and scale later on. The process of formation began from the cradle of human civilization in Mesopotamia to the formation of the oldest trade routes and then evolved into a complex network stretching from the Roman Empire in the west to the emperor. Han Empire in the East. Next was the disruption of East-West trade on the mainland as the two empires declined and Islam arose from the Middle East and spread influence, becoming the center of global trade for a long time. At the same time, maritime trade with the Indian Ocean was a major trade route that flourished, replacing the ancient Land Silk Road as the economic lifeblood of the world. Besides the overall picture of the ups and downs of trade history, WJBernstein analyzes the interaction between trade with political, social and other natural factors. For example, the geographical structural differences between the Mediterranean and the Indian Ocean lead to different economic-political, naval strategies thinking among Mediterranean civilizations (such as the Greek). Greece with civilizations participating in the Indian Ocean trading system (Islamic countries in the Middle East, Indian sub-states, Southeast Asia and China). At the same time, he offers interesting examples of times when economic, political and religious interests conflict, forcing rulers to make choices. For example, the famous story when Venice Governor Enrico Dandolo used all his tricks to bring the Crusader army to attack and sack Constantinople, Venice’s influential competitor, instead of attacking Egypt, his partner. commercial importance of Venice, as the Crusaders expected. And not only conscious human endeavors, but at times nature plays an important role in the course of history. The fourteenth century Black Death plague devastated both Christian Europe and the Muslim Middle East, but the consequences were different. The epidemic weakened feudalism in Europe, gave freedom of thought and trade a chance to develop, while at the same time making Islamic civilization severely irreversibly damaged, paving the way for turn in global trade advantage from East to West. In Trade history refers to characters, both famous and anonymous, who contributed to the making of commercial history. It was an anonymous Mesopotamian businessman whose letter on earth kept evidence of a transaction thousands of years ago. It was Vasco da Gama, it was Columbus, the restaurants that paved the way for Europe to regain control of the world. Or Richard Cobden, a pioneer in the fight for free trade thought in the UK in particular and around the world in general. Trading is not only about exchanging goods, but also about competing for the market, competing for monopoly on trading of goods with great profit. Contact between people belonging to far away countries also means the exchange of deadly pathogens. Merchant crews contributed to the spread of the Black Death in Europe. Spanish expeditions made many peoples of the Americas extinct because of the pathogens they carried. Competing for markets, fighting for strategic commodity resources has been the main cause of most wars from ancient times, from the Peloponnese to two bloody World Wars in the twentieth century. WJBernstein has neutrally recounted the story of commerce and its impact on human society, fully pointing out the bright and dark sides of this story. More importantly, we all know this is an ongoing story, and understanding the past is probably the best, if not the only, way to make the future of the dark side of trade possible. control is better, and on the bright side, commercial benefits bring people, to be promoted more thoroughly.