Transposable Elements That Transpose Through an RNA Intermediate Are Retrotransposons

question 75

Essay

Transposable elements that transpose through an RNA intermediate are retrotransposons. There are two types of retrotransposons: those that have direct repeats at each end, often called long terminal repeats (LTRs), and those that do not have these repeats. Pick an example of each type of retrotransposon and give (1) its basic structure and (2) its possible evolutionary history.

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Definitions:

FIFO inventory cost method

A method to assign costs to inventory that assumes the first items purchased are the first ones sold, primarily affecting the cost of goods sold and ending inventory value.

Cost of merchandise sold

The total cost incurred by a company to sell its merchandise during a specific period, including the cost of the goods themselves plus any additional costs related to their sale.

Perpetual inventory system

A method of accounting for inventory that records the sale or purchase of inventory immediately through the use of computerized point-of-sale systems and enterprise asset management software.

LIFO cost method

An inventory costing method that assumes the last items purchased or produced are the first ones sold, impacting the cost of goods sold and inventory valuation.