Question

What is the name of the mobile genetic elements?
A. Plasmids
B. Pill
C. Barr body
D. Transposons

Answer 1

Hint: Mobile genetic elements are able to switch locations within a genome. These are also called transposable elements.

Complete answer: Mobile genetic elements are a certain type of genetic material that can shift within a genome or be transferred from one species to another.
1. These genetic elements exist in all species. Around 50 percent of the genome is thought to be mobile genetic elements in humans.
2. The elements play a distinct role in evolution.
3. Gene duplication events can also occur via the mobile genetic elements action mechanism. MGEs may also cause problems.
4. These are also called transposons.
5. These can switch locations within a genome and include retro-transposons and DNA transposons.
6. Genes can move within and between genomes at higher rates because of mobile genetic elements (MGEs). Although mobile elements are fundamentally self-interested entities, and thus replicate for their own gain, they generally carry genes beneficial for their hosts and/or the neighbors of their hosts.

So, the correct option is D. Transposons

Note: The position switching of transposons is called transposition.
The small, extrachromosomal DNA inside a cell physically different from chromosomal DNA is called a plasmid. These are able to replicate independently.
A ‘Barr Body’ is a condensed, inactivated X-chromosome present in female cells.