Announcement

Collapse

Natural Science 301 Guidelines

This is an open forum area for all members for discussions on all issues of science and origins. This area will and does get volatile at times, but we ask that it be kept to a dull roar, and moderators will intervene to keep the peace if necessary. This means obvious trolling and flaming that becomes a problem will be dealt with, and you might find yourself in the doghouse.

As usual, Tweb rules apply. If you haven't read them now would be a good time.

Forum Rules: Here
See more
See less

The function wars

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • The function wars

    Larry Moran has an interesting series on his Sandwalk blog about what, exactly constitutes "functional" DNA. The first part, found here:

    http://sandwalk.blogspot.ca/2014/06/...rs-part-i.html

    is more of a detailed discussion of what function is and what it's not. The second part, closely related, is here:

    http://sandwalk.blogspot.com/2014/07...t-ii.html#more

    focuses on "junk DNA" and the difficulty of defining it. Moran himself confuses the matter by defining "functional" and "junk" DNA as being both exclusive and exhaustive -- that is, all DNA that is nonfunctional is junk. Which of course begs the question of what "functional" means.

    These are long entries with lots of comments, and they do go into such matters as degree to which sequences are conserved, and whether "spacer" sequences whose length and location but not whose ordering is conserved, should be considered functional.

    He also discusses the distinction between historical and empirical approaches to function.

    The details in dispute over exactly what qualifies as a function, according to which definitions and measurements, populations and time scales, is pretty interesting. The bottom line seems to be that most eukaryotic genomes contain a great deal of DNA that serves no function no matter how inclusive the definition, and that most genomes are pretty well mapped by now.

Related Threads

Collapse

Topics Statistics Last Post
Started by shunyadragon, 10-17-2020, 05:11 PM
7 responses
33 views
0 likes
Last Post rogue06
by rogue06
 
Started by shunyadragon, 10-09-2020, 09:25 PM
0 responses
22 views
0 likes
Last Post shunyadragon  
Started by rogue06, 10-09-2020, 03:29 PM
6 responses
51 views
1 like
Last Post shunyadragon  
Started by shunyadragon, 10-07-2020, 12:11 PM
0 responses
10 views
0 likes
Last Post shunyadragon  
Started by Sherman, 10-06-2020, 03:31 PM
33 responses
212 views
0 likes
Last Post Leonhard  
Working...
X