A chromosomal segment that can undergo transposition, especially a segment of bacterial DNA that can be translocated as a whole between chromosomal, phage, and plasmid DNA in the absence of a complementary sequence in the host DNA.Also called jumping gene
- ‘Thus we were able to clone the DNA sequence that flanked the transposon insertion using plasmid rescue.’
- ‘To me however, the most interesting components of junk DNA are the mobile genetic elements, also called jumping genes or transposons.’
- ‘The DNA transposons resemble typical bacterial transposons, they have terminal inverted repeats which enclose the transposase gene.’
- ‘Several DNA sequences that show sequence similarity to transposons were isolated from these sex chromosomes.’
- ‘In fact, in evolutionary terms, it is likely that such sequences have been more successful as transposons than as host genes.’
1970s: from transposition + -on.
We take a look at several popular, though confusing, punctuation marks.