Hello,
I have difficult to understand Punnett Squares. For example, let us define "A" as being the dominant normal allele and "a" as the recessive abnormal one. As carriers, you and your mate are both heterozygous (Aa). This disease only afflicts those who are homozygous recessive (aa).
My question:
Is "A" or "a" just pronoun?
"A" may come from one of "A", "G", "C", "T"?
"a" also may come from one of "A", "G", "C", "T"?
So "Aa" is just a combination of two letters of "A","G","C" and "T"?
"AA" or "aa" is just one of "AA","GG","CC" and "TT"?
Thanks.
I have difficult to understand Punnett Squares. For example, let us define "A" as being the dominant normal allele and "a" as the recessive abnormal one. As carriers, you and your mate are both heterozygous (Aa). This disease only afflicts those who are homozygous recessive (aa).
My question:
Is "A" or "a" just pronoun?
"A" may come from one of "A", "G", "C", "T"?
"a" also may come from one of "A", "G", "C", "T"?
So "Aa" is just a combination of two letters of "A","G","C" and "T"?
"AA" or "aa" is just one of "AA","GG","CC" and "TT"?
Thanks.
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