| 释义 |
Definition of junk DNA in English: junk DNAnoun mass nounGenetics DNA that does not code for a protein, usually occurs in repetitive sequences of nucleotides, and does not seem to serve any useful purpose. Example sentencesExamples - Much of the remaining junk DNA in our genome may also turn out to be former transposable elements that have mutated beyond recognition.
- He says the idea of using stretches of junk DNA to track genes was well-established by the mid-80s.
- There may be yet more genetic variations waiting to be discovered and some of the regions now thought to contain junk DNA may be serving some as-yet-undiscovered regulatory purposes.
- Most of the insertions and deletions Britten studied occur in long stretches of so called junk DNA, which includes no functioning genes.
- Ohno also proposed that a large proportion of the mammalian genome is noncoding or junk DNA.
- To me however, the most interesting components of junk DNA are the mobile genetic elements, also called jumping genes or transposons.
- And the mouse's smaller number of base pairs may simply stem from that animal's ridding its genome more effectively of so-called junk DNA sequences than humans did.
- Since junk DNA does not code for proteins, mutations can accumulate within it without natural selection weeding them out.
- Our human genome is about 90% junk DNA, which comes mostly from viruses.
- Zimmer also brings up the argument that simply by making the genome bigger that junk DNA may serve a useful function by making cells the correct size.
Definition of junk DNA in US English: junk DNAnoun Genetics Genomic DNA that does not encode proteins, and whose function, if it has one, is not well understood. Example sentencesExamples - Ohno also proposed that a large proportion of the mammalian genome is noncoding or junk DNA.
- There may be yet more genetic variations waiting to be discovered and some of the regions now thought to contain junk DNA may be serving some as-yet-undiscovered regulatory purposes.
- Since junk DNA does not code for proteins, mutations can accumulate within it without natural selection weeding them out.
- And the mouse's smaller number of base pairs may simply stem from that animal's ridding its genome more effectively of so-called junk DNA sequences than humans did.
- Our human genome is about 90% junk DNA, which comes mostly from viruses.
- Much of the remaining junk DNA in our genome may also turn out to be former transposable elements that have mutated beyond recognition.
- Most of the insertions and deletions Britten studied occur in long stretches of so called junk DNA, which includes no functioning genes.
- To me however, the most interesting components of junk DNA are the mobile genetic elements, also called jumping genes or transposons.
- Zimmer also brings up the argument that simply by making the genome bigger that junk DNA may serve a useful function by making cells the correct size.
- He says the idea of using stretches of junk DNA to track genes was well-established by the mid-80s.
|