What Mechanism Used for Mobilization of Transposable Elements Can Lead

question 50

Multiple Choice

What mechanism used for mobilization of transposable elements can lead to deletions in genomes?

• A)Transposase sometimes deletes genomic DNA while removing DNA transposons from the genome.
• B)Alignment of two transposable elements is required for mobilization and misalignment can result in deletions.
• C)RNA polymerase transcribes transposable elements; when it makes mistakes, DNA nucleotides are sometimes deleted.
• D)Piwi RNAs inhibit movement of transposons by deleting DNA that includes and surrounds the inverted repeats.

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Definitions:

Spiral Staircase

A type of staircase that curves around a central pole, creating a helical structure.

Chromosomes

Threadlike structures that come in 23 pairs, with one member of each pair coming from each parent. Chromosomes contain the genetic substance DNA.

Human Cell

The basic building block of the human body, which consists of a nucleus and cytoplasm enclosed in a membrane.

Genetic Expression

The process by which information from a gene is used to synthesize functional gene products, such as proteins, which can influence an organism's traits.