3.5 Genetic Modification & Biotechnology Flashcards _ Quizlet.pdf

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3.5 Genetic Modification & BiotechnologyHome/Science/Biology/BiotechnologyTerms in this set (23)State the function of the PCR.The polymerase chain reaction is used to makelarge numbers of copies of DNA.Describe the selectivity of thePCR.PCR is not used to copy the entire set of DNAmolecules in a sample such as blood or semen. PCRis used to copy specific DNA sequences. (Asequence is selected for copying by using a primerthat binds to the start of the described sequence.The primer binds by complementary base pairing.)What does gel electrophoresisinvolve?3.5 Genetic Modification & BiotechnologyStudy
What is the procedure of gelelectrophoresis?Samples are placed in wells cast in a gel. The gel isimmersed in a conducting fluid and an electric fieldis applied. Molecules in the sample that are chargedwill move through the gel. Molecules with negativeand positive charges move in opposite directions.Proteins may be positively or negatively charged socan be separated according to their charge.Outline how DNA fragmentsare separated in gelelectrophoresis.3.5 Genetic Modification & BiotechnologyStudy
Outline how the universality ofthe genetic code allows forgene transfer between species.Molecular biologists have developed techniquesthat allow genes to be transferred between species.The transfer of genes from one species to another isknown as genetic modification. It is possiblebecause the genetic code is universal, so whengenes are transferred between species, the aminoacid sequence translated from them is unchanged -the same polypeptide is produced. (Genes have

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Term
Three
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N/A
Tags
DNA, Genetic Modification Biotechnology

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