BIO 151 1st Edition Lecture 1Outline of Current Lecture 1. Species, Evolution, and Cells2. Are species stable?3. Does new life have to come from old life or spontaneous generation?4. What about cells? Current Lecture Species, Evolution, and Cells:- species - a group of physically similar organisms (that can interbreed in nature if they aresexually reproductive). - taxonomy - put species into groups.-hierarchical system developed by Carl Linnaeus (1700s)Are species stable?:- assumption of species stability, but...- changed during 1800s by:-geology: Earth not 5,000 years old, modern estimate = 4.6 billion years-fossil record: -old species have vanished-current species missing from old fossils-new species appearing in new habitats?-new species on new islands?-new finch species on the Galapagos Island-new species on new volcanic island?-old species on mainland?Does new life have to come from old life or spontaneous generation?:- life could arise from non-living substances?- common sense for most of human history- discovered in 1668 for maggots by Redi, 1700s for other multicellular organisms-uncovered = maggots-covered = no maggots- new species evolved from old speciesThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.What about cells?:- invention of microscope- Robert Hooke (1655) called
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