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Author Topic:   How will creationists react to the first human-chimp hybrid?
Taz
Member (Idle past 3313 days)
Posts: 5069
From: Zerus
Joined: 07-18-2006


Message 128 of 138 (501725)
03-07-2009 3:24 PM
Reply to: Message 127 by ausar_maat
03-07-2009 3:11 PM


Re: Labelling Chromosomes
ausar_maat writes:
I wonder though, if the centromere in chrom 2 is from chimp chrom 13, it should theoritically leave us with a third inactive centromere in chrom 2...
Huh? Third centromere? If two chromosomes, each having 1 centromere, fuse into 1, where did yo get the third centromere from?

This message is a reply to:
 Message 127 by ausar_maat, posted 03-07-2009 3:11 PM ausar_maat has replied

Replies to this message:
 Message 129 by ausar_maat, posted 03-07-2009 3:40 PM Taz has not replied

  
Taz
Member (Idle past 3313 days)
Posts: 5069
From: Zerus
Joined: 07-18-2006


Message 134 of 138 (501799)
03-07-2009 7:41 PM
Reply to: Message 132 by ausar_maat
03-07-2009 7:12 PM


Re: Centromeres
I'm sorry, I'm a moron. I still don't understand what you are saying. Hillier proposed there should be 3 centromere sites on chromosome 2? Perhaps you could reference the original texts?
Added by edit.
I think the confusion comes from the names. You need to keep in mind that there is no such thing as chromosome 1 or chromosome 2. The names are there to help us keep track of which is which. Before it was known that chimp chromosomes 13 and 14 were homologous to human chromosome 2, they were called chimp chromosomes 13 and 14. Later on, people pulled them out of line and named them 2p and 2q, or 2a and 2b, because chimp chromosome 13 is homologous to human chromosome arm 2p (2a if you will) while chimp chromosome 14 is homologous to human chromosome arm 2q (2b if you will).
Before, 2p referred to human chromosome arm 2p.
If it helps, human arm 2p = human arm 2a = chimp 13 = chimp 2a = chimp 2p. The confusion is in the name!
Edited by Taz, : No reason given.

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 Message 132 by ausar_maat, posted 03-07-2009 7:12 PM ausar_maat has not replied

  
Taz
Member (Idle past 3313 days)
Posts: 5069
From: Zerus
Joined: 07-18-2006


Message 137 of 138 (501887)
03-08-2009 12:52 PM
Reply to: Message 135 by lyx2no
03-07-2009 11:54 PM


Re: Centromeres
See, even I remembered the chimp numbers wrong. Actually, I could have sworn it was 13 and 14.
Anyway, regarding the 2q, 2p, 2a, and 2b confusion, that's what happens when you put too much into the names.
I remember one time in physics a student came to the TA office for help. Long story short, he couldn't understand why in one of the homework problems the text told him to use one equation but his professor told him to use another. We (the TAs) took a look at it and we couldn't understand what the confusion was. They were the same equation! They used different letters but the format was exactly the same.
It's always better to know what the heck those names stood for rather than put too much faith in the names themselves. Afterall, you're not going to stand there and argue to somebody for calling someone you know "William" even though you know him as "Wil".

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 Message 135 by lyx2no, posted 03-07-2009 11:54 PM lyx2no has not replied

  
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