nhap mon sinh hoc 4
TRANSCRIPT
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Mỏ của các loài chim phù hợp với nguồn thức ăn
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Ngày nay, cây trồng phong phú là do chon lọc nhân tạo
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Chọn lọc giới tính
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Ví dụ loài bồ câu
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Hoặc loài chó
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Chọn lọc tự nhiên
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Ngày 14 tháng 11 năm 1859, Darwin đã xuất bản cuốn sách: “ Nguồn gốc các loài qua con đường chọn lọc tự nhiên”
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LaMarck và Darwin
• LaMarck– Con hươu cần lấy thức
ăn trên cao nên cổ vươn dài ra và cuối cùng làm cho cổ hươi dài ra
• Darwin– Những con hươu cổ dài
sẽ lấy thức ăn dễ dàng hơn nên có khả năng sống sót và di truyền cho đời sau
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"Nothing in biology makes sense except in the light of
evolution."
-- Theodosius DobzhanskyMarch 1973
Geneticist, Columbia University(1900-1975)
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Các bằng chứng tiến hóa (hóa thạch)
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Tiến hóa của loài voi
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Tiến hóa ngựa
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Tiến hóa song song
Niche Placental Mammals Australian Marsupials
BurrowerMole
Anteater
Mouse
Lemur
Flyingsquirrel
Ocelot
Wolf Tasmanian “wolf”
Tasmanian cat
Sugar glider
Spotted cuscus
Numbat
Marsupial mole
Marsupial mouse
Anteater
Nocturnalinsectivore
Climber
Glider
Stalkingpredator
Chasingpredator
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Sự bắt chước
Monarch malepoisonous
Viceroy maleedible
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Tiến hóa hội tụ
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Đồng Tiến hóa
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• Sự kháng thuốc của sâu bọ
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Cấu tạo tiền tế bào (Protocell)
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Hiệu ứng nhà kính
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Thank you and …