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Dna sequences

Dna sequence

(Science: molecular biology) The relative order of base pairs, whether in a fragment of dna, a gene, a chromosome, or an entire genome.

See: base sequence analysis.


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cladograms

Here is a task: Look at the picture - you see three DNA sequences from three species that are related. Based on that sequence only, draw a cladogram that ...

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by leeroykincaid
Tue Feb 25, 2014 8:09 pm
 
Forum: Evolution
Topic: cladograms
Replies: 7
Views: 2023

Living or not? (viruses,viroids and prions).

... are generally stripped down, efficient predators, only carrying as much DNA or RNA necessary to hijack their host and make extra copies of themselves. ... have no equivalent in Mimivirus. But, of the genes that are shared, the sequences average about 50 percent identity on the protein level. This ...

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by Sumanth001
Sun Dec 08, 2013 12:37 pm
 
Forum: Microbiology
Topic: Living or not? (viruses,viroids and prions).
Replies: 15
Views: 10402

The Selfish Gene

... will tend to evolve, to perpetuate more successful variants. There are DNA "parasites" that copy themselves and spread the copies throughout ... of the genes is going to be more powerful than selection on the sequences alone. The first stages of biogenesis would have involved selection ...

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by Darby
Fri Nov 01, 2013 12:54 pm
 
Forum: Evolution
Topic: The Selfish Gene
Replies: 2
Views: 1948

Re: Does complementary DNA include only coding sequences ?

Right - another technique, like RACE, is usually needed to extend the sequence across UTRs. If the primers are designed against genomic sequence, they can include UTR sequence, but are unlikely to capture the entire UTRs.

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by jonmoulton
Tue Oct 29, 2013 3:14 pm
 
Forum: Genetics
Topic: Does complementary DNA include only coding sequences ?
Replies: 4
Views: 1938

Re: Does complementary DNA include only coding sequences ?

cDNA can contain 5' and/or 3' UTR sequence but not introns.

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by jonmoulton
Mon Oct 28, 2013 3:46 pm
 
Forum: Genetics
Topic: Does complementary DNA include only coding sequences ?
Replies: 4
Views: 1938
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