Is an autosomal gene denoted by one Latin letter or two? (A or a; AA, Aa or aa)
| August 11, 2021 | education
An autosomal gene is designated by two Latin letters:
AA – dominant homozygote;
aa – homozygous for a recessive trait;
Aa is a heterozygote.
In addition to autosomal genes, there are genes linked to the X or Y chromosome (for example, the gene for color blindness linked to the Y chromosome is denoted as Y (a)).
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