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Author | Topic: Quick Questions, Short Answers - No Debate | |||||||||||||||||||||||
nwr Member Posts: 6411 From: Geneva, Illinois Joined: Member Rating: 4.9 |
Can genes transpose into and out of the junk DNA?
Let's end the political smears
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molbiogirl Member (Idle past 2668 days) Posts: 1909 From: MO Joined: |
Transposons are junk DNA. One and the same.
Transposons make up about 1/3 of our non-coding DNA.
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nwr Member Posts: 6411 From: Geneva, Illinois Joined: Member Rating: 4.9 |
Very interesting. Thank you.
McClintock discovered transposable genes because of their affects on the appearance of corn. If they are non-coding, they should not have that effect. So I think that indicates that they can move out of the junk DNA. Comments? Let's end the political smears
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molbiogirl Member (Idle past 2668 days) Posts: 1909 From: MO Joined: |
Transposons are supposed to jump in and out of DNA. And usually everything goes OK.
Sometimes they get left behind in the host genome because the transposon loses a chunk of something important (and it can't move anymore). McClintock's maize transposons suppressed a color gene (I don't know how -- probably because it was sitting in the gene). If the transposon jumped, the gene suppression disappeared and the maize started making pigment. So, technically, those transposons weren't junk DNA (cause they still worked). Edited by molbiogirl, : No reason given.
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sinequanon Member (Idle past 2890 days) Posts: 331 Joined: |
I've long wondered why some birds run/walk and others hop. It doesn't seem to correlate with their feeding habits or habitat in an obvious way. For example, some ground feeders like robins and blackbirds hop, while wagtails and pigeons tend to run or walk. Even starlings walk on the ground, even though they spend a lot of time in trees where they would have to hop. Crows do both more regularly then other birds I have seen.
Any ideas?
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nwr Member Posts: 6411 From: Geneva, Illinois Joined: Member Rating: 4.9 |
That's fascinating. Thanks.
Let's end the political smears
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molbiogirl Member (Idle past 2668 days) Posts: 1909 From: MO Joined: |
Is there something wrong with the search feature?
I recently searched a thread for "Brookings" and found only two results. I knew there were others and went thru the thread post by post -- and sure enough, there they were. This isn't the first time this has happened. Am I doing something wrong? Is the search function hinky?
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jar Member (Idle past 420 days) Posts: 34026 From: Texas!! Joined: |
It sucketh.
Anyone so limited that they can only spell a word one way is severely handicapped!
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nwr Member Posts: 6411 From: Geneva, Illinois Joined: Member Rating: 4.9 |
I'm not certain, but I think the comments in this earlier post still apply
Let's end the political smears
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RAZD Member (Idle past 1431 days) Posts: 20714 From: the other end of the sidewalk Joined: |
Try google with
site:http:// Brookings You may need to pick the Similar Pages link. Enjoy. (cutie )
I feel prettyoh so pretty it's a pity how pretty I feeeeeeeeeeeeel ... we are limited in our ability to understand by our ability to understand RebelAAmericanOZen[Deist ... to learn ... to think ... to live ... to laugh ... to share.
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molbiogirl Member (Idle past 2668 days) Posts: 1909 From: MO Joined: |
Thanks, RAZD!
I feel prettyoh so pretty it's a pity how pretty I feeeeeeeeeeeeel ... Naughty kitten. Hey. That book I posted (it lives in The Book Nook now) has some great abiogenesis stuff. Especially Robert Shapiro's part.
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arachnophilia Member (Idle past 1370 days) Posts: 9069 From: god's waiting room Joined: |
Try google with
site:http:// Brookings You may need to pick the Similar Pages link. i almost think we should abandon the search script entirely, and just have that top link go to google. i've seen pages that have a "search within webpage" and "search the web" option, via google. iirc, talk.origins uses something similar. that would work way better here. i think it's pretty much what everyone uses anyways. the built-in search feature verily doth suketh. it does some really wacky things, and takes forever to do them.
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BMG Member (Idle past 235 days) Posts: 357 From: Southwestern U.S. Joined: |
Quick question to the experienced; is it possible (or wise) to attempt to go to school for a degree in the sciences while working full-time?
Of those I have asked and replied, "it was possible" , most claimed that the time required for class (and labs, especially) while working full-time is strained, and manifests itself as a great stressor to students. Is this true? Any feedback from those with science degrees is much appreciated.
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nwr Member Posts: 6411 From: Geneva, Illinois Joined: Member Rating: 4.9 |
It depends on what science, what are your goals, how tiring is your work, etc.
I suggest you open a [forum=-14] thread with a bit more info on what you are your aims. Let's end the political smears
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Stile Member Posts: 4295 From: Ontario, Canada Joined: |
sinequanon writes: I've long wondered why some birds run/walk and others hop. It doesn't seem to correlate with their feeding habits or habitat in an obvious way. To me, it correlates with bird physical-size-and-ability and their environment. Taking the following into consideration: -hopping is faster than running-hopping takes more energy than running -as bird size increases, the energy needed to hop also increases -hopping can be necessary to get over rough terrain -what's "rough" depends on the bird's physical characteristics And it becomes clearer that smaller birds will hop more often as most terrain is "rough" to them, and it doesn't take that much more of an energy increase. While larger birds are more capable of stepping over most obstacles, and hopping becomes a less efficient use of energy. We still see small birds walking/running on flatter terrain when they're not in any hurry. Or large birds hopping when terrain gets rough for them, or when panic sets in. Seems to me it's more of a efficiency decision by each specific bird in each specific situation depending on energy conservation, environmental terrain and speed considerations.
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