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Chap 8-11, pt 2 Mendel through Biotechnology
Chap 8-11, pt 2 Mendel through Biotechnology

... Ltd. finds that the global use of biotech crops has added $27 billion to farm income, and greatly reduced agriculture's negative impacts on the environment.  2006- The National Institutes of Health begins a 10-year, 10,000-patient study using a genetic test that predicts breast-cancer recurrence an ...
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Lecture Guide_Regulation of Gene Expression(Ch 7.5-7.6)

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< 1 ... 1715 1716 1717 1718 1719 1720 1721 1722 1723 ... 1937 >

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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