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Punnett Square Question

Juicy123 Jul 12, 2015 11:59 AM

Hello all i recently read an article that discussed the punnett square statistics in reference to "double het" Leo's

He described it using letters to represent traits
ex: [aa] is an albino trait and [pp] is an patternless trait

His goal was to describ how you'd get an [aapp] gecko, "Albino patternless"

This kind of confused me, because i don't know much about the genes of Leo's but i thought they just came in two's, one from each parent. Such as [aa] crossed with [pp] would give you [ap]
...Can anyone understnad what's confusing me? Do non-double hets only carry these double gene combos vs using 4 letters to represent the genes of a gecko? I can't think how to describe it to well right now Lol, sorry, but maybe someone can see into my madness and help clear my understnad!
Thanks! :D

Replies (2)

eminart Jul 21, 2015 02:48 PM

>>Hello all i recently read an article that discussed the punnett square statistics in reference to "double het" Leo's
>>
>>He described it using letters to represent traits
>>ex: [aa] is an albino trait and [pp] is an patternless trait
>>
>>His goal was to describ how you'd get an [aapp] gecko, "Albino patternless"
>>
>>This kind of confused me, because i don't know much about the genes of Leo's but i thought they just came in two's, one from each parent. Such as [aa] crossed with [pp] would give you [ap]
>>...Can anyone understnad what's confusing me? Do non-double hets only carry these double gene combos vs using 4 letters to represent the genes of a gecko? I can't think how to describe it to well right now Lol, sorry, but maybe someone can see into my madness and help clear my understnad!
>>Thanks! :D

You're dealing with two traits that are not on the same allele. They are unrelated. Just as if you were crossing a tall person with a blonde headed person. A person is not either tall OR blonde. They can be any combination of the two, just as a gecko can be albino and patternless, or non-albino and patternless, etc. etc. They're not albino OR patternless. Two letters are used to represent each trait (assuming it isn't on the same allele).

I'm not an expert, but that's the general idea.
-----
"Between the wish and the thing the world lies waiting."

Juicy123 Aug 03, 2015 06:17 PM

That was actually really helpful! Great analogy with the blond and height comparison too! Very good...thank you man

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