How different can a pair of chromosomes be?
Michael L. Sullivan
mlsulliv at facstaff.wisc.edu
Tue Nov 28 10:08:10 EST 2000
Anna, you mean during meiosis, right?
Don't have a number, sorry, but just thinking about it, the natural example
would be the X and Y chomosomes, which must pair up for meiosis. These two
differ considerably in size, but still manage to pair up. Somebody else
probably has a better answer, but that was my quick one.
>My husband asked my a question I didn't know the answer to, so I thought
>I'd ask here.
>What degree of difference in size can be tolerated between two
>For example, consider an insertion or deletion mutation which affects a
>non-coding region of the chromosome. How big an insertion or deletion
>would it take to stop the chromosomes pairing up properly during cell
>division? Suppose there were many small insertions and deletions
>scattered along the chromosome?
>Obviously, there is some toleration of size difference within a pair of
>chromosomes, but how much? A percentage estimate would be nice (he's an
>engineer, he likes numbers :-)
>I see you standing there, far out along the way,
> I want to touch you but, the night becomes the day.
>I count the words that I am never going to say,
> And I see you, in midnight blue. (ELO - Midnight Blue)
Michael L. Sullivan, Ph.D
U.S. Dairy Forage Research Center
1925 Linden Drive West
Madison WI, 53706
(608) 264-5144 Phone
(608) 264-5147 Fax
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