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barry barry
wrote...
Posts: 11630
12 years ago
You observe an individual of your favorite study organism expressing the dominant phenotype for a certain trait. How would you go about determining if the individual was homozygous dominant or heterozygous for that trait?
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wrote...
Staff Member
12 years ago
Perform a test cross with a recessive homozygous individual: If Aa × aa  offspring are Aa : aa in a 1:1 ratio, and if AA × aa Rightwards Arrow all offspring are Aa heterozygotes.
- Master of Science in Biology
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