Question

Human transposons include:

A. Alu, which is unique to Homo sapiens and Pan troglodytes (chimpanzee).
B. Ac and Ds, the discovery of which earned Barbara McClintock a Nobel Prize.
C. LINES (Long Interspersed Elements), which make up 21% of the genome.
D. P elements, which are responsible for hybrid dysgenesis.
E. None of the above.

Answer 1

Human transposons include Alu, Ac and Ds, LINES, and P elements.

Step-by-step explanation:

Human transposons include:

1. Alu, which is unique to Homo sapiens and Pan troglodytes (chimpanzee).
2. Ac and Ds, the discovery of which earned Barbara McClintock a Nobel Prize.
3. LINES (Long Interspersed Elements), which make up 21% of the genome.
4. P elements, which are responsible for hybrid dysgenesis.

Answer 2

Human transposons include LINES (Long Interspersed Elements), which make up 21% of the genome.

The correct answer is C.

Step-by-step explanation:

Transposons are mobile DNA elements that can change their position within the genome. In the case of humans, LINES (Long Interspersed Elements) are a significant type of transposon, constituting a substantial portion of the genome. These elements can impact genome evolution and function. Option A is incorrect, as Alu elements are primate-specific and not unique to humans and chimpanzees. Option B references Ac and Ds, which are transposons in plants and not human-specific. Option D mentions P elements, which are associated with fruit flies and not found in humans. Therefore, the correct choice is Option C, as LINES are a prominent type of transposon in the human genome.

C. is the correct answer.