Chapter 15

Question 1

Classes of transposable elements

Answer 1

Class I (Rethroelements)
Class II (DNA statements)

Question 2

Class I (Rethroelements)

Answer 2

RNA and Reverse transcriptase is used to produce cDNA (DNA is inserted into a different position in the genome

Question 3

Class II (DNA statements)

Answer 3

DNA is excised from the original site and inserted into another site

Question 4

Autonomous Elements

Answer 4

can move on their own

Question 5

Non-autonomous elements

Answer 5

require the help of an autonomous element to move

Question 6

Bacterial insertion sequence

Answer 6

segments of Bacterial DNA that can move from one position to another while coding only for those proteins necessary for their mobility

Question 7

transposase

Answer 7

an enzyme required for the movement of IS elements from one position to another

Question 8

Transposable Elements in prokaryotes

Answer 8

Prokaryotic Transposons

Question 9

Prokaytoric Insertion sequences and prokaryotic transposons are both known as _______

Answer 9

transposable elements

Question 10

Retrotransposons

Answer 10

these use RNA intermediates those behave like retrovirus and are unique to eukaryotes. Retrotransposons encode a reverse transcriptase that produces a DNA copy from an RNA Intermediate.

Question 11

DNA Transposons

Answer 11

Encode tranposase that cuts the transposon from the chromosome and catalyzes its reinsertion at another chromosomal location

Question 12

Transposable Elements in Eukaryotes

Answer 12

Retrotransposons

DNA Transposons

Question 13

C-value paradox

Answer 13

Simple organisms often contain more DNA than more complex organisms

Question 14

Safe havens

Answer 14

A region of the genome where transposable elements can safely insert without damaging the cell

Question 15

Transposable elements compose the largest fraction of the ______

Answer 15

human genome