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Obsidian.
Yes, but it is not always true.
It is the observable trait that will be present. If the genotype is AA (A being brown eyes, a being blue), the person's phenotype would be brown eyes. For Aa, it would also be brown eyes. For aa, it would be blue eyes.
If a person is blood type A, then they can be either AA or AO. The person with AB, has to be AB. So the possible combinations are AA, AB, AO, or BO. So, their offspring could be type A, type B, or type AB, but could not be type O.
As per a Punnet Square: Aa crossed with aa can result in Aa, Aa, aa, or aa. So 50% heterozygotes, 50% recessives.
Ive always pronounced it aa-fro-dite but, it is aa-fro-die-tee
yes
Albinism is a recessive trait, meaning that an albino person has the genotype AA, while a person who isn't albino has the trait Aa or AA. Two albino people (AA x AA) will have all albino children. Aa x AA will have a 50% probability of albino children, and 50% normal children who are carriers (Aa). AA x AA will have all normal children who are carriers (Aa). Aa x Aa will have 25% AA (normal/non carriers), 25% AA (albino), and 50% Aa (normal/carriers) offspring. AA x AA will have all normal children who are not carriers (AA).*A person who has the genotype Aa is a carrier because they carry the allele (a) for albinism but they are not albino. The allele (A) is dominant so it covers the (a) allele.
If the first person is AA, then the possible resulting genotypes are AA or AB. If the first person is AO, then the possible resulting genotypes are AA, AB or BO.
The person is considered to be heterozygous dominant. Heterozygous refers to having to of the same allele (AA or AA). dominant means AA not AA
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AA is supposed to be anonymous. This is a question that should not be asked. However a person in AA can freely volunteer this about themselves. That is whether or not they are in AA. ==new answer== I would be extremely surprised if this was true. I have read and appreciated his work and have heard him speak in person. A person who drinks could not develop into the person I heard speak. I know this because I spent a number of years doing the type of discipline that he does. Drinking is not and cannot be a part of it.
Heterozygous Aa Homozygous AA, aa
With aa dumb person
AO or AA
AA
Aa