A researcher introduces double-stranded RNA into a culture of mammalian cells and can identify its location or that of its smaller subsections experimentally, using a fluorescent probe. Some time later, she finds that the introduced strand separates into single-stranded RNAs, one of which is degraded. What does this enable the remaining strand to do?

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#Question id: 30079

#Unit 2. Cellular Organization

Which of the following best describes an Ac transposable element? 

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#Question id: 30080

#Unit 2. Cellular Organization

During transposition, retrotransposons use reverse transcriptase to:

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#Question id: 30081

#Unit 2. Cellular Organization

Alu sequences are nonautonomous _______________ that comprise 10% of the human genome.

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#Question id: 30082

#Unit 2. Cellular Organization

Hybrid dysgenesis is caused by which of the following transposable element?

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#Question id: 30083

#Unit 2. Cellular Organization

Which of the following statements about the P element is CORRECT?

a) P elements are responsible for hybrid dysgenesis in germ cell of Drosophila

b) Hybrid dysgenesis occurs in the offspring of crosses between P+ male and P- female strains of Drosophila

c) P element activity is regulated by piRNAs derived from the P elements themselves.

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#Question id: 30084

#Unit 2. Cellular Organization

Drosophila is considered a model system because it is quite easy to create transgenic lines harboring a variety of different genes. As a Drosophila geneticist, which one of the following is a DNA transposon that you would exploit to create a transgenic line?