1/2
For instance the two parents could be AB and AB
The possible combinations are: AA AB BA BB
2/4 of those are heterozygous, or 1/2.
These groupings are called domains.
<span>A domain is the highest taxonomic rank of organisms. Carl Woese, an American microbiologist, and biophysicist designed the three-domain system which describes that the tree of life consists of three domains: Archaea, Bacteria, and Eukarya. Each of these three domains of life is characterized by rRNA which is unique to them.</span>
Acid-Fast Bacteria possess a unique cell wall architecture different from both gram negative and gram positive bacteria. The thick outer mycolic acid layer renders acid-fast bacteria resistant to gram stain.
LUQ, Left Upper Quardrant
Answer: codominance
Explanation: codominance means the two equally dominant alleles are expressed at the same time.