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
Correct Answer: Option B
Explanation
A heterozygous tall plant (say Tt) crossed with itself will give a set of TT, tT, Tt and tt. This is 75% tall and 25% dwarf approximately.