Brushes. 1  Chinese brushes usually have bamboo handles but are sometimes made of other materials such as hard wood, ivory and porcelain. The brushes used for calligraphy should have stiff tips. Most commonly, these are made from the hair of wolves. A large-size brush is easier for the beginner to handle.
Definition of TRANSPOSABLE ELEMENT. : a segment of genetic material that is capable of changing its location in the genome or in some bacteria of undergoing transfer between an extrachromosomal plasmid and a chromosome.ADVERTISEMENT.noun.efinition of TRANSPOSABLE ELEMENT. : a segment of genetic material that is capable of changing its location in the genome or in some bacteria of undergoing transfer between an extrachromosomal plasmid and a chromosome. ADVERTISEMENT. noun.
Alu is an example of a so-called jumping gene a transposable DNA sequence that reproduces by copying itself and inserting into new chromosome locations. Alu is classified as a retroposon, because it is thought to require the retrovirus enzyme reverse transcriptase (rt) enzyme to make a mobile copy of itself.f one reduces the definition of life to the perpetuation and amplification of a DNA sequence through time, then Alu is an extremely successful life form. However, other scientists believe that transposable elements have played an important role in evolution by creating new mutations and gene combinations.