alleryIn that same cross, the genotypic ratio at F2 is:
A1 to 1 to 1
B2 to 2 to 1
C1 to 2 to 1
D3 to 2 to 1
Answer & Solution
Correct answer: C. 1 to 2 to 1
1. A quarter are TT and a quarter are tt.
2. Half are the heterozygous Tt.
3. So the genotypic ratio is 1 to 2 to 1.
_Source: syllabus Biology, Chapter 5, Principles of Inheritance and Variation._
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