BIOLOGY 1M03 Chapter Notes - Chapter 1: Cell Membrane, Zygote, Ribosomal Rna
8 Feb 2016
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Document Summary
Chapter one- biology and the tree of life. The cell theory involves the idea that all the organisms comprise class and that all cells derive from pre-existing cells. The theory of evolution by natural selection involves the idea that species change through time because individuals with particular heritable traits survive and produce more offspring than do other individuals. A phylogenetic tree is a diagram that may be interpreted as representing inferred evolutionary relationships among species. Phylogenies (= tribe sources") can be established by analyzing similarities (and differences) in traits. Species that share distinctive traits are situated in topological proximity on phylogenetic trees. Biologists ask questions, generate hypotheses to answer them, and design experiments or make observations that test the predictions made by competing hypotheses. Organisms obtain, comprise of cells, process information, replicate, evolve as a population. Scientific theories comprise of- patterns observed in the natural world and mechanisms or processes identified that produce the patterns.
