Genetic Elements
Genetic Elements - Related Videos
04:00
Periodic Classification of the Elements
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2020
The periodic table arranges atoms based on increasing atomic number so that elements with the same chemical properties recur periodically. When their electron configurations are added to the table, a periodic recurrence of similar electron configurations in the outer shells of these elements is observed. Because they are in the outer shells of an atom, valence electrons play the most important role in chemical reactions. The outer electrons have the highest energy of the electrons in an atom...
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Classification of Elements and Compounds
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2020
Pure substances consist of only one type of matter. A pure substance can be an element or a compound. An element consists of only one type of atom, while a compound consists of two or more types of atoms held together by a chemical bond. Elements are classified as atomic or molecular based on the nature of their basic units. Compounds are pure substances composed of two or more elements in fixed, definite proportions. Compounds are classified as ionic or molecular (covalent) based on the bonds...
08:50
Genetic Screens
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2023
Genetic screens are critical tools for defining gene function and understanding gene interactions. Screens typically involve mutating genes and then assessing the affected organisms for phenotypes of interest. The process can be “forward”, where mutations are generated randomly to identify unknown genes responsible for the phenotypes, or it can be “reverse”, where specific genes are targeted for mutation to observe what phenotypes are produced.Here, JoVE reviews various types of genetic...
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Elements: Chemical Symbols and Isotopes
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2020
A chemical symbol is an abbreviation used to indicate an element or an atom of an element. For example, the symbol for mercury is Hg. The same symbol is used to indicate one atom of mercury (microscopic domain) or to label a container of many atoms of the element mercury (macroscopic domain). Some symbols are derived from the common English name of the element; others are abbreviations of the name in another language — Latin, Greek or German. For example, the symbol for aluminum (common name)...
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Linear Amplification Mediated PCR – Localization of Genetic Elements and Characterization of Unknown Flanking DNA
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Cited by 14 •
2014
Linear-amplification mediated (LAM)-PCR is a method developed to identify the exact positions of integrating viral vectors in the genome. The technique has evolved to be the superior method to study clonal dynamics in gene therapy patients, biosafety of novel vector technologies, T-cell diversity, cancer stem cell models, etc.
FAQs
Complementary base pairing allows DNA sequences to preserve and convey information through matching bases, while sequence-specific interactions determine how particular regions are recognized or used. Together, these mechanisms support accurate information storage, transmission, and selective control of transcription. Their importance becomes especially clear when researchers connect sequence differences with changes in gene activity or inheritance.
Genes provide templates used to produce RNA or protein, whereas promoters and enhancers regulate transcription. This distinction separates information that specifies a product from sequence regions that influence when and where that product is made. Examining both types of elements helps researchers explain why different cells can use related genetic information in different ways.
Movement or copying can change how genetic information is arranged within a genome and may contribute to biological variation. These behaviors make genetic elements relevant not only as stable inherited sequences but also as sources of genome change. Researchers therefore consider them when interpreting genome organization, variation, and patterns of inheritance.
Mutations alter DNA sequence and can therefore change the information carried by a gene or the regulatory behavior associated with a promoter or enhancer. Comparing altered and unaltered sequences helps researchers connect genetic change with transcription, cellular function, or inheritance. This approach supports interpretation of how genome differences relate to biological outcomes.
A useful analysis considers sequence content, the distinction between gene and regulatory regions, and the relationships among elements that store, regulate, or transmit information. Researchers can then evaluate how transcription is controlled, how elements are organized, and whether movement or copying contributes to variation. These observations support broader interpretation of genome organization and function.
Genetic elements support genetic engineering, functional genomics, and experimental systems designed to investigate biological processes. Their sequence and regulatory properties can be examined to study gene activity, test relationships between genome organization and function, or investigate inheritance and variation. These applications make genetic elements useful both for manipulating biological information and for understanding how cells use it.