DOM1, DOM2が完了したようです。
この図通りだと後は再突入直前のDeorbit Maneuver
審査はHTV-X1の打上げ前のこれでもう済んでるのかもしれません（よく知らないです）
宇宙開発利用部会（第99回）
＞新型宇宙ステーション補給機1号機（HTV-X1）に係る安全対策について
mext.go.jp/b_menu/shingi/gij…
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خريطة تصّور مواقع أصول الخيول المستأنسة
Dom1: خيول مرتبطة بآسيا الوسطى- كازخستان، بها اقدم دليل للاستئناس، لكن خيولها اليوم تعتبر برية.
Dom2: خيول مرتبطة بالبحر الأسود وثقافة يامنايا وتعد سلف لجميع الخيول المستأنسة اليوم.
Dom3: خيول مرتبطة بأوروبا الوسطى لكن إنقرضت بالقرن 19.
Evidence from archaeology, aDNA, osteology, and other disciplines reveals that humans tamed and rode horses as early as the fourth millennium BCE, showing that the process of domestication began well before the first favorable genetic mutations. scim.ag/4u2Itcf
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Early horse representations in the steppes.
(A) The earliest clear image of a steppe horse, embossed on a silver cup from the Maikop-Oshad chieftain’s grave, Russia (107) dated 3520–3350 calBCE at 2σ (4645 ± 23 BP; OxA-X-3106-13), located at the ecotone between the North Caucasus Kuban piedmont and the Volga-Don steppes where modern DOM2 horses evolved, so probably a horse of the DOM2 clade. The large head, stiff mane, thick neck, and partly tufted tail is like a modern E. ferus przewalskii (E. przewalksii) of the DOM1 clade, picture on the right.
Source: "Horse genetics, archaeology, and the beginning of riding"
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The horses from El-Kurru in modern Sudan have not yet been genetically assigned to DOM1, DOM2, or DOM3. Current studies are mainly osteological and archaeological, showing distinct skeletal traits, but no published ancient DNA has confirmed their lineage. So a unique Nubian lineage remains scientifically possible.
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Archaeological, osteo-zoological and ancient DNA evidence reveals that three distinct horse populations-DOM1, DOM2, and DOM3-once ranged from western Siberia to Central Europe.
Early taming efforts occurred independently across regions and populations around 3500-3000 BCE, if not centuries earlier. Shortly before 3000 BCE, Yamnaya people were already riding DOM2 horses and bringing these into the western regions.
However, only horses from the DOM2 population were fully domesticated between 2200 and 2100 BCE. These horses, spread by mobile human groups, rapidly expanded across Eurasia and into the Middle East, becoming the ancestors of all modern domestic horses.
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Horse genetics, archaeology, and the beginning of riding.
"Evidence from archaeology, ancient DNA, osteology, and other disciplines shows that horses from multiple genetic backgrounds (DOM1, DOM2, and, as we suggest here, DOM3) were managed, milked, and ridden long before 2200 BCE. Yamnaya groups (∼3200–2600 BCE) rode DOM2 horses-the direct ancestors of modern domestic stock-while incorporating them into diets, rituals, and mobility systems."
science.org/doi/10.1126/scia…
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