"Junk" DNA must have a purpose, otherwise selection would have gotten rid of much of it. Why keep it around to serve as source of problems?
-
-
Replying to @JayMan471
@JayMan471@hbdchick Intragenomic competition (surely?).1 reply 0 retweets 0 likes -
Replying to @Outsideness
@JayMan471@hbdchick ... the organism isn't the exclusive target of natural selection.1 reply 0 retweets 1 like -
Replying to @Outsideness
@Outsideness@hbdchick If it were functionless, it could have been lost with no harm. Indeed, would have been favored (cut down mutations).1 reply 0 retweets 1 like -
Replying to @JayMan471
@JayMan471@hbdchick Selective pressure on non-expressive DNA is clearly too low to pay for intra-genomic editing machines you're expecting.1 reply 0 retweets 0 likes -
Replying to @Outsideness
@Outsideness@hbdchick Deletions of functionless areas likely to have been favored.1 reply 0 retweets 0 likes -
Replying to @JayMan471
@JayMan471@hbdchick 'Likely' meaning what? Junk DNA is the fact, the selective hypothesis the counter-factual, no?2 replies 0 retweets 0 likes -
Replying to @Outsideness
@JayMan471@hbdchick It's information-theoretically obvious that much junk DNA is functionless garbage (simple repeat sequences) ...1 reply 0 retweets 0 likes
@JayMan471 @hbdchick ... so it's not as if we're going to discover some secret functionality just by looking harder at it.
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.