NEET 2016
- Exam
- NEET
- Year
- 2016
- Subject
- Zoology
- Chapter
- Principles of Inheritance and Variation
NEET 2016 · Zoology · Principles of Inheritance and Variation
A tall true breeding garden pea plant is crossed with a dwarf true...
A tall true breeding garden pea plant is crossed with a dwarf true breeding garden pea plant. When the plants were selfed the resulting genotypes were in the ratio
Options
- A1 : 2 : 1 :: Tall homozygous : Tall heterozygous : Dwarf
- B1 : 2 : 1 :: Tall heterozygous : Tall homozygous : Dwarf
- C3 : 1 :: Tall : Dwarf
- D3 : 1 :: Dwarf : Tall
Correct answer
A. 1 : 2 : 1 :: Tall homozygous : Tall heterozygous : Dwarf
Step-by-step solution
Mendel did the crossing of pure tall plant represented by (TT) with a pure dwarf plant represented by (tt). In the F1 generation of this cross, plants formed are tall (Tt). When this plant from F1 generation undergoes self-pollination, then in the F2 generation, three tall plants and one dwarf plants are seen. In this 1 homozygous tall plant (TT), two heterozygous tall plants(Tt), 1 homozygous dwarf plant(tt) are formed. Phenotypic ratio is 3:1::Tall:Dwarf, while the genotypic ratio becomes 1:2:1::Tall homozygous : Tall heterozygous : Dwarf