Discussion<\/a><\/li><\/ol><\/div>Vocabulary<\/h2>\n\n\n\n
Extinct<\/strong><\/span><\/span>-no longer existing
Dinosaurs has been extinct for over 65 million years.<\/em>
<\/p>\n\n\n\nGenus<\/strong><\/span><\/span>– a scientific group of related species
Palaeoloxodon is the genus that includes several ancient elephant species
<\/p>\n\n\n\nAncestors<\/strong><\/span>– People, animals, or plants from whom later generations develop; family members or species that lived in the past.
Naumann\u2019s elephant migrated from its African ancestors thousands of years ago.
<\/p>\n\n\n\nMigrated<\/strong><\/span>– Moved from one place to another, usually over a long distance or period of time, often for better living conditions.
The elephants migrated to Japan when land bridges formed during a glacial period.
<\/em><\/em><\/p>\n\n\n\nDescended<\/strong><\/strong><\/strong><\/strong><\/strong><\/span><\/span>\u2013 Came from or developed from an earlier person, animal, or group.
Naumann\u2019s elephant descended from an ancient group of African elephants.
<\/em><\/p>\n\n\n\nArticle<\/h2>\n\n\n\nDNA Breakthrough Sheds Light on Japan\u2019s Extinct Naumann\u2019s Elephant<\/strong><\/strong><\/h4>\n\n\n\nA Japanese-led research team has successfully carried out the first DNA analysis of Naumann\u2019s elephant, an extinct<\/strong> species that once lived in Japan. This breakthrough has helped scientists better understand the elephant\u2019s evolutionary history.<\/p>\n\n\n\nNaumann\u2019s elephant belonged to Palaeoloxodon, an extinct genus<\/strong> of straight-tusked elephants that originated in Africa and later spread across Eurasia. Researchers from the University of Yamanashi, the National Museum of Nature and Science, and other institutions discovered that Naumann\u2019s elephant diverged from its African ancestors<\/strong> much earlier than previously believed\u2014around 1.05 million years ago.<\/p>\n\n\n\nWhile some Palaeoloxodon species grew over four meters tall, Naumann\u2019s elephant was relatively small, standing between two and three meters at the shoulder. Its ancestors likely migrated<\/strong> to Japan during a glacial period, when lower sea levels created land bridges connecting Japan to the Asian continent.<\/p>\n\n\n\nNaumann\u2019s elephant is thought to have become extinct between 20,000 and 30,000 years ago. Although fossils have been found at around 300 sites across Japan, its genetic lineage remained unknown until now. The research team extracted mitochondrial DNA, which is passed from mother to offspring, from molar fossils dating back 49,000 and 34,000 years.<\/p>\n\n\n\n
By comparing this DNA with fossils found in Germany and other regions, scientists concluded that Naumann\u2019s elephant belonged to an ancient lineage. Contrary to earlier theories, it did not gradually evolve in Japan but descended<\/strong> directly from an early African group. One researcher described it as a \u201cliving fossil,\u201d retaining primitive traits that had disappeared elsewhere. This discovery provides valuable insight into elephant evolution in East Asia.<\/p>\n\n\n\nSource: Yoimuri Shimbun (English)<\/sub><\/p>\n\n\n\nComprehension Questions<\/h2>\n\n\n\n
Answer the questions following the article in English.<\/p>\n\n\n\n
\n- What was the main achievement of the Japanese-led research team?<\/li>\n\n\n\n
- How was Naumann\u2019s elephant different in size from other Palaeoloxodon species?<\/li>\n\n\n\n
- Why was mitochondrial DNA important for this study?<\/li>\n\n\n\n
- What previous theory about Naumann\u2019s elephant did the new findings challenge?<\/li>\n<\/ol>\n\n\n\n
Summary<\/h2>\n\n\n\n
In your own words, attempt to summarise the article in 4 sentences or less.<\/p>\n\n\n\n
Discussion<\/h2>\n\n\n\n
Discuss these topics with your tutor, and support your answers with examples or experience.<\/p>\n\n\n\n
\n- What do you think the term \u201cliving fossil\u201d suggests about evolution?<\/li>\n\n\n\n
- How might climate change in the past have influenced animal migration?<\/li>\n\n\n\n
- Should more resources be spent on studying extinct species? Why or why not?<\/li>\n<\/ol>\n\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
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