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Heterozygous tall plants were crossed with pure-breeding dwarf plants of the same species. What were...

Biology
WAEC 2004

Heterozygous tall plants were crossed with pure-breeding dwarf plants of the same species. What were the approximate percentages of the offspring?

  • A. 100% tall 0% dwarf
  • B. 75% tall 25% dwarf
  • C. 50% tall 50% dwarf
  • D. 25% tall 75% dwarf
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Correct Answer: Option C
Explanation

A heterozygous tall plant (say Tt) crossed with pure-breeding dwarf plants (tt) will give a set of Tt, Tt, tt and tt. This is 50% tall and 50% dwarf approximately.

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