You perform a test cross of the dihybrid AaBb with a
double homozygous aabb, and you score the phenotypes of
1000 progeny. If genes A and B are completely genetically linked
(i.e., no recombination between loci), what offspring counts do you
expect to observe?
| All 1000 with the Ab phenotype. |
| All 1000 with the ab phenotype. |
| 250 with the AB phenotype, 250 with the ab phenotype, 250 with the Ab phenotype, and 250 with the aB phenotype. |
| All 1000 with the AB phenotype |
| 500 with the AB phenotype, and 500 with the ab phenotype. |
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