AP BIOLOGY

THE MOLECULAR BASIS OF INHERITANCE

TRANSPOSONS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The defining property of transposable elements is
A
Replicative
B
Non-replicative
C
Motility
D
Non-motility
Explanation: 

Detailed explanation-1: -The defining property of transposable elements is their mobility; i.e. they are genetic elements that can move from one position to another in the genome. Beyond the common property of mobility, transposable elements show considerable diversity. Some move by DNA intermediates, and others move by RNA intermediates.

Detailed explanation-2: -The transposable elements have been referred to as ‘junk’ DNA, selfish sequences or genomic parasites, because in the same cell they can move from chromosome to chromosome.

Detailed explanation-3: -Transposable elements (TEs) are defined as DNA sequences that are able to move from one location to another in the genome. TEs have been identified in all organisms, prokaryotic and eukaryotic, and can occupy a high proportion of a species’ genome.

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