Felissa R. Lashley RN PhD ACRN FACMG CIC's Clinical Genetics in Nursing Practice PDF


By Felissa R. Lashley RN PhD ACRN FACMG CIC

Designated a Doody's middle Title!

The 3rd variation of this award-winning textual content presents new and up to date wisdom approximately genetics concerns suitable to nursing perform. learn in series or used as a reference, this can be a complete evaluate of ways genetics affetcs the care that nurses offer. as well as a precis of simple human genetics and dialogue of the Human Genome venture, this re-creation contains the newest study findings and implications approximately inheritance, significant genetic problems (cytogenetics or chromosomal, inherited biochemical, and congenital anomalies), and genetics in dual stories. A attention of the moral impression of genetics on society and destiny generations, in addition to info on assisted copy around out the overview.

comprises over a hundred illustrations and images of particular genetic problems; tables and figures at the distribution of illness; and an in depth appendix directory institutions, businesses, and internet sites appropriate to genetics.

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Sample text

DNA profiling or fingerprints has uses, including criminal and paternity applications. After using a particular restriction enzyme to obtain DNA fragments from a sample, fragments are placed on a gel and into an electrical field to separate the fragments by size. This process, called "electrophoresis," depends on the more rapid migration of smaller fragments and the slower migrations of larger fragments. Fragments are rendered single stranded. They are then transferred to a membrane or filter, and a specific labeled probe is added, and washing occurs.

This is important because it is 21 increasingly realized that neither genes nor proteins function in isolation but are interconnected in many ways, and so it is important to understand the complex functioning of cells, tissues, and organs. GENE ACTION AND EXPRESSION Although the same genes are normally present in every somatic cell of a given individual, they are not all active in all cells at the same time. They are selectively expressed or "switched" on and off. For example, the genes that determine the various chains that make up the hemoglobin molecule are present in brain cells, but in brain cells hemoglobin is not produced because the genes are not activated.

MITOCHONDRIAL GENES The cell nucleus is not the only site where DNA and genes are present. These are also present in mitochondria and in chloroplasts (in plants only). The mitochondria are cell organelles located in the cytoplasm that are concerned with energy production and metabolism, and are thus known as the "power plants" of the cell. One of the functions of the mitochondrial oxidative phosphorylation system (OXPHOS) is to generate adenosine triphosphate (ATP) for cell energy. Cells contain hundreds of mitochondria and each mitochondrium can contain up to 10 copies of mtDNA, meaning that thousands of copies of mtDNA are present in some cells.

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