Viruses in BioTech Viruses Viral Vector Retroviruses Gene Therapy

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Viruses __________________ In addition to the capsid, some viruses are surrounded by an envelope. The envelope is created when a virus leaves a host cell and part of the host cell membrane wraps around the virus.

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Retrovirus Replication Using the cell’s supply of materials, the reverse transcriptase copies the viral RNA to make a complementary molecule of single-stranded DNA The reverse transcriptase then directs the synthesis of a second DNA strand that is complementary to the first strand. __________________ Click on the image in slideshow mode to view the embedded video Retrovirus Replication

The Use of Viruses as Vectors This ability ………… For example, the human gene for insulin has been inserted into the nucleus of safflower seeds. __________________ Maybe we could also insert that gene into a diabetic and cure them of diabetes!

Viral Vector A viral vector is a virus that is used to transfer the DNA from a donor to a host. ___________________ Researchers remove the ………….

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Your Task Describe the process that is used by retroviruses to replicate their genetic material.