Talk:Long terminal repeats

quiz
Using this format: {I________ (use) it for many years. |type="[]"} - use || Incorrect. The subject mentions 'many years' so the verb should be in the past tense - uses || Incorrect. Review your tenses. + used || Correct! This is the simple past form of the verb. - using || Incorrect. Review your tenses. {I________ (use) it when I________ (become) interested in genealogy. |type="[]"} - use | become || Incorrect. Review your tenses. + used | became || Correct! Simple past form of the verb. - uses | becomes || Incorrect. Review your tenses. - using | becoming || Incorrect. Review your tenses. Long terminal repeats (LTRs) are sequences of DNA that repeat hundreds or thousands of times. They are found in retroviral DNA and in retrotransposons, flanking functional genes. They are used by viruses to control of gene expression and integration. [1] For example, a retrovirus genome might contain the following features: LTR -- gag -- pol -- env -- LTR The LTRs are partially transcribed into an RNA intermediate, followed by reverse transcription into complementary DNA (cDNA) and ultimately dsDNA (double-stranded DNA) with full LTRs. The LTRs then mediate integration of the retroviral DNA via an LTR specific integrase into another region of the host chromosome. Retroviruses such as Human Immunodeficiency Virus (HIV) use this basic mechanism. [2] DennisDaniels (discuss • contribs) 16:40, 16 August 2023 (UTC)