When traits show complete dominance, the genotype can be revealed by a test cross. In the example
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When traits show complete dominance, the genotype can be revealed by a test cross. In the example of tall and dwarf plants (Figure 16-14) why is it necessary to use the dwarf parent? In general, why is it necessary to use a parent that is homozygous recessive?
Figure 16-14
Transcribed Image Text:
Dwart parent: # Possible gametes: 100% t Test parent: TT Possible gametes 100% T Test parent: Tr Possible gametes: 50% T 50% ! Dwarf Tt 100% of F,'s are tall Tt 50% of F,'s are tall tt 50% of F,'s are dwarf
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