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Logic, DNA, and Poetry
Logic, DNA, and Poetry

... explain everything else! That is how they expected a mechanically conceived world to work, whether they were dealing with human speech and thought or the genetic text of the Book of Life. What they thirsted after was a world of life and thought driven by a neatly controlling syntax that played itsel ...
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Introduction to Genetics
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... can do, and what cells can do is what organs, tissues and bodies can do! In each nucleus there are approximately 100 000 genes. Deoxyribonucleic acid (DNA), the substance of genes, is a code in very simple molecular language. The code consists of four “letters”, “A” “T” “G” and “C”. The words of thi ...
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... was purchased by a farmer for $100,000. The progeny sired by Charlie were all normal in appearance. However, certain pairs of his progeny, when inbred, produced red and white progeny at a frequency of about 25%. Charlie was soon removed from the stud list of Holstein breeders. Explain precisely why, ...
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Microevolution

Microevolution is the change in allele frequencies that occur over time within a population. This change is due to four different processes: mutation, selection (natural and artificial), gene flow, and genetic drift. This change happens over a relatively short (in evolutionary terms) amount of time compared to the changes termed 'macroevolution' which is where greater differences in the population occur.Population genetics is the branch of biology that provides the mathematical structure for the study of the process of microevolution. Ecological genetics concerns itself with observing microevolution in the wild. Typically, observable instances of evolution are examples of microevolution; for example, bacterial strains that have antibiotic resistance.Microevolution over time leads to speciation or the appearance of novel structure, sometimes classified as macroevolution. Macro and microevolution describe fundamentally identical processes on different scales.
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