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Station A
Station A

... influenced by environmental factors. 2. Hemoglobin is a protein that carries oxygen in red blood cells. The hemoglobin molecules produced by some people have one specific amino acid that is different from the amino acid at that position in normal hemoglobin. Which is the most likely cause? ...
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Mutations Notes - Mr. Coleman`s Biology

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Chapter 3 - Cynthia Clarke

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chapter twelve INHERITANCE PATTERNS AND HUMAN GENETICS

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Genetics Study Guide

... 14How many traits are involved in a dihybrid cross? 15Which of Mendel's laws states that the dominant gene in a pair will be expressed? 16If both alleles are the same, is the genotype homozygous or heterozygous? Write an example. 17Write an example of a hybrid or heterozygous genotype. 18The genes f ...
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Learning objectives: • Define the terms `Gene` and `Chromosome

... !  All our genetic information is held within the DNA. !  Genes are sections of DNA that code for specific ...
< 1 ... 1687 1688 1689 1690 1691 1692 1693 1694 1695 ... 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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