The notation AA is not commonly in use when grading colourless diamonds: the highest grade is D.
The notation AA can be used to grade black diamonds as it falls into this range: AAA, AA+, AA, A, and I1 with AAA being the best.
Note GIA does not grade black diamonds.
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The grade AA 5 is not a common grade for diamonds. If this is the only grade given for the stone you are buying, you might be buying something other than a diamond.
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AA 5 has several meanings, depending on the context. It is apparently a rating system in Great Britain for lodging. (AA, 5 diamond.) For diamond stones, this rating is sometimes applied to jewelery-grade black diamonds, as a grading system for clarity. This is not a grading scale used by the Gemological Institute of America or the European grading scale. It is a scale used, however, for industrial diamonds, according to the link, below.
yo mama!!:0 that's who he/she is going out with a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a AA a a a a a a a a a AA a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a AA a a a a a a a a a AA a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a AA a a a a a a a a a AA a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a AA a a a a a a a a a AA a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a AA a a a a a a a a a AA a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a AA a a a a a a a a a AA a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a AA a a a a a a a a a AA a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a
EE BB CC B AA GG FF E Twinkle Twinkle Little Star How I wonder what you are. BB AA GG F BB AA GG F Up a- bove the world so high like a diamond in the sky (repeat first line)
Knights of Cydonia by Muse
If ALL offspring are Aa, The parents are AA and aa.
Recorder: For One And AllAA BB AA GG AA BB A B A AA BB AA GG AA BB A B A BB BB AA G G BB B A A G A BB BB AA G G BB B A A G A AA BB AA GG AA BB A B A AA BB AA GG AA BB A B A
Here are the four possibilities: AA Aa Aa aa Therefore there is a 25% chance of producing a homozygous dominant offspring (AA).
If the parents are both AA, which results in the cross AA X AA, then the offspring will all be AA. If both parents are AA, resulting in the cross AA X AA, then all offspring will be AA. If BOTH parents are Aa, resulting in the cross Aa X Aa, then the offspring will be 25% AA, 50% Aa, and 25% AA. This is only true if the alleles are not sex-linked.
As per a Punnet Square: Aa crossed with aa can result in Aa, Aa, aa, or aa. So 50% heterozygotes, 50% recessives.