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Biology, 26.11.2019 04:31, snowflakekitty001
Retrotransposons are a type of transposable element, or transposon. these segments of dna can duplicate and insert themselves into new locations in the genome. for example, the alu sequence is about 300 bases long, and it is the most abundant retrotransposon in primate genomes. in fact, it makes up approximately 15% of the human genome. choose the description that best explains how the alu sequence can affect the size of the human genome. the alu sequence can increase the size of the human genome because it adds 300 bases to the genome each time it is duplicated. cannot influence the human genome because the human genome cannot blend with any of the other primate genomes. can either increase or decrease the size of the human genome because transposable elements contain transcription factors to regulate gene expression. can decrease the size of the human genome because the element is always inserted into an intron so it will be spliced from the human genome.
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Biology, 21.06.2019 20:00, vannia
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Biology, 21.06.2019 23:00, jacquicmoreland2106
Neelaredoxin is a 15-kda protein that is a gene product common in anaerobic prokaryotes. it has superoxide-scavenging activity, and it is constitutively expressed. in addition, its expression is not further induced during its exposure to o2 or h2o2 (silva, g., et al. 2001. j. bacteriol. 183: 4413β4420). which of the following statements best describes neelaredoxin synthesis? a-neelaredoxin is produced at all times; levels are constant even when exposed to o2 or h2o2.b-neelaredoxin is produced at all times; exposure to o2 or h2o2 increases expression. c-neelaredoxin is produced at all times; exposure to o2 or h2o2 decreases or prevents expression. d-neelaredoxin is only produced when there is exposure to o2 or h2o2.
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Retrotransposons are a type of transposable element, or transposon. these segments of dna can duplic...
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