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Xeroderma Pigmentosum(XP)
Xeroderma Pigmentosum(XP)

... form of skin creams that contain DNA repair enzymes. • The enzyme are contained in liposomes(脂质体) that can apparently penetrate (穿过) the outer layer of the skin and participate in repair pathways ...
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June-2015-Biology-Final-Exam-Review

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Introduction to Biotechnology

... desired DNA from an organism and cut a plasmid and insert that DNA.  Recombinant DNA cannot function all by itself  They must become a part of the genetic material of LIVING cells before the genes they contain can be activated ...
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...  circular molecule of naked DNA called a PLASMID  DNA is readily available to RNA polymerase  control of transcription by regulatory proteins (operon)  most of DNA codes for protein or RNA  no introns, small amount of non-coding DNA ...
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Within minutes, 2nd Generation ATP® tests answer the question
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... pathogen, stimulate antibody production but will not make you sick Gene Therapy – treat genetic disorders by transferring normal gene into cells that lack them; replacement gene is expressed in person’s cell 98%, therefore 2% codes for proteins Process of altering the genetic material of cells or or ...
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Study Guide Chapters 8-9 Nucleic Acids, and Molecular Engineering

... 10. What is the Tm of DNA due too, which base pairs is it dependent upon, and why? From ‘melting’ of DNA what enzyme did we realize had to exist? What ‘chaperone’ like protein needed also to exist? What makes RNA polymerase unique in this regard? 11. What are hybrid heteroduplexes? What can you do w ...
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DNA supercoil



DNA supercoiling refers to the over- or under-winding of a DNA strand, and is an expression of the strain on that strand. Supercoiling is important in a number of biological processes, such as compacting DNA. Additionally, certain enzymes such as topoisomerases are able to change DNA topology to facilitate functions such as DNA replication or transcription. Mathematical expressions are used to describe supercoiling by comparing different coiled states to relaxed B-form DNA.As a general rule, the DNA of most organisms is negatively supercoiled.
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