A heterozygous tall plant (Tt) is crossed with a dwarf plant (tt). What proportion of the offspring is expected to be dwarf?
A50%CORRECT
B0%
C75%
D25%
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The gametes T and t from one parent combine with t from the other, giving Tt and tt in equal numbers, so half the offspring are dwarf. This test cross is used to determine whether a tall plant is TT or Tt.
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