Question

The human genome contains about _________ of class II of elements that probably predate human evolution (Smit 1996).

(a) 2,000 copies

(b) 200,000 copies

(c) 2,00,00,000 copies

(d) 20,00,000 copies

The question was asked in unit test.

My doubt stems from Genome Anatomy topic in division Collecting & Storing Sequences in Laboratory of Bioinformatics

Answer 1

The correct answer is (b) 200,000 copies

To explain I would say: The class of TEs, class II, is made up of elements that employ a DNA-based mechanism of transposition. Class II elements also include the Activation-Dissociation (Ac-Ds) family in maize and the P element in Drosophila.