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Basic genetics question

Die_prophezeiung Jan 12, 2006 02:36 AM

punnet square:
Normal x Normal
B B
B BB BB
B BB BB

B=dominant
b=recessive

There being a 100% chance of a normal leopard gecko. Even though the square says 100% what is real % because 100% is not accurate, think albinos and patternless. If you were to breed 100 geckos wouldnt there be a chance of a patternless or a albino?

Replies (7)

PR1090 Jan 12, 2006 03:29 PM

Are you talking about the gene popping up? That is so rare that it would make the punnet square 99.9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999_
9999999999999999999999999999999999999999999999999999999999999999

That is 9 repeating.

Die_prophezeiung Jan 12, 2006 07:27 PM

so rounded to the hundreth its a .01 chance? so the punnet square is 99.9% accurate?

Paul Hollander Jan 17, 2006 01:19 PM

That Punnett Square is 100% accurate. What is not 100% accurate is the knowledge of the geckos' genes. If an albino or patternless pops out among the babies, then the parents are not BB x BB.

Paul Hollander

PR1090 Jan 19, 2006 06:13 PM

I think what hes talking about is that the albino gene randomly popping up, not being geneticly from parents but just kinda popping up like with the first albinos. So you really cant round it its really closer to .00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001% chance of that happening

Paul Hollander Jan 20, 2006 01:24 PM

I thought that he was talking about randomly buying two wild caught, normal-looking leopard geckos and having them drop albinos. The chance of that is somewhere in the 0.0001 - 0.000001 range.

Paul Hollander

Die_prophezeiung Jan 26, 2006 11:59 PM

thats the range i was looking for. 000000000000000000000000000000000000000000000000000000.1 seems a little to far fetched.

thank you both though.
-----
0.1 SHTCT
1.0 PATTERNLESS
1.0 LEOPARD
1.0.1 BEARDED DRAGON
1.0 GREEN IGUANA

PR1090 Jan 31, 2006 08:20 AM

n/p

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