2020 BIO 101 Class 2 Notes
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• Evolution o The unity of life is based on DNA and a common genetic code ▪ The diversity of life arises from differences in DNA sequences ▪ Life has a unity and diversity o The diversity of... life can be arranged into 3 domains ▪ Bacteria are the most diverse and widespread prokaryotes • Single celled ?? ▪ Archeae are prokaryotes that often live in Earth’s extreme environments • Single celled with no nuclei ▪ Eukarya have eukaryotic cells and include • Single-celled protists and • Multicellular fungi, animals, and plants o 1.7 Evolution explains the unity and diversity of life ▪ From his observations, Darwin inferred • Individuals with heritable traits best suited to environment more likely to survive and reproduce • This unequal reproductive success over many generations, an increasing proportion of individuals with advantageous traits • Result: evolutionary adaptation, accumulation of favorable traits in a population over time [Show More]
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