منابع مشابه
Junk DNA - repetitive sequences
Eukaryote and also human DNA contains large portion of noncoding sequences. As for the coding DNA, the noncoding DNA may be unique or in more identical or similar copies. DNA sequences with high copy numbers are then called repetitive sequences. If the copies of a sequence motif lie adjacent to each other in a block, or an array, we are speaking about tandem repeats, the repetitive sequences di...
متن کاملThe role of Junk DNA
Many efforts have been done in order to explain the role of junk DNA, but its function remain to be elucidated. In addition the GC-content variations among species still represent an enigma. Both these two mysteries can have a common explanation: we hypothesize that the role of junk DNA is to preserve the mutations probability that is intrinsically reduced in GC-poorest genomes.
متن کاملCompeting chromosomes explain junk DNA.
sciencemag.org SCIENCE Paleoindian, and fishtail points previously provided a roadmap that archaeologists used to trace the spread of Paleoindians throughout the Americas. Such a roadmap is lacking for pre-Clovis sites. Assemblages with distinctive stemmed (“tanged”) chipped-stone projectile points, crescents (lunate-shaped), and leaf-shaped bifaces found in Japan, northeast Asia, western North...
متن کاملLin He: “Junk” DNA isn’t
The child of Western-trained engineers, Lin He grew up in a Beijing very different from today's skyscraper megalopolis. She recalls the freedom of the outdoors, the remnants of ancient city walls, and the fl ying kites. Like many others born in that era, He aspired to become an important scientist like the mathematicians and technologists who were then China's national heroes. Having long plann...
متن کاملTUF Love for “Junk” DNA
The widespread occurrence of noncoding (nc) RNAs--unannotated eukaryotic transcripts with reduced protein coding potential--suggests that they are functionally important. Study of ncRNAs is increasing our understanding of the organization and regulation of genomes.
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ژورنال
عنوان ژورنال: Genome Research
سال: 2000
ISSN: 1088-9051
DOI: 10.1101/gr.148900