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CLOUSTON SYNDROME: FIRST CASE IN RUSSIA
CLOUSTON SYNDROME: FIRST CASE IN RUSSIA

... of structural defects in the examined sample. The patient was worried about the risk of having an affected child. During genetic counseling, Clouston syndrome was hypothesized and the woman was sent for molecular genetic screening of mutations in the GJB6 gene. We performed whole gene sequencing usi ...
Chapter 5 Evolution and Biodiversity Review
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M:\Biology 3201.June 2009.wpd

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Evolution - Museums Victoria
Evolution - Museums Victoria

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INTEGRATION FROM PROTEINS TO ORGANS: THE PHYSIOME

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... receive a recessive gene from each parent can become blind. Arms and legs can become paralyzed or even die. Strokes and heart attacks are common. Treatments are available to decrease the complications of this disease but there is no cure. Many African Americans will ask to be tested to see if they h ...
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Lan Mai - New Treatments of Cancers using Gene Expression and Regulation
Lan Mai - New Treatments of Cancers using Gene Expression and Regulation

... promoters, it makes sense that tumor-suppressor genes are probably silenced by methylation. This tumor-suppressor inactivation is a major cause of multiple cancers. In fact, a change in the methylation of a gene has been recognized to be the initial cause of 70 percent of cancers (Brutlag, lecture 1 ...
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... containing a basic helix-loop-helix leucine zipper (bHLH-zip) that allows the formation of cMyc-Max heterodimers and that activates transcription; Mad and Mxil may be involved in tumour suppression since they can compete with Myc proteins for the interaction with Max; Mxil normally functions to supp ...
Organelle genome evolution
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... be added, together with other hypotheses, such as Muller’s ratchet and the high mutagenicity of free radicals1, to selective pressures that, in some but not all lineages, contribute to genetic erosion of organelles. However, their hypothesis is restricted to: (1) uniparentally inherited organelles, ...
< 1 ... 1332 1333 1334 1335 1336 1337 1338 1339 1340 ... 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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