Principles of Inheritance and Variation · Class 12 · CBSE · Science Biology
A cross between a red-flowered snapdragon (Antirrhinum majus) and a white-flowered snapdragon yielded pink flowers in the F1 generation. When F1 plan…
Practice question from Principles of Inheritance and Variation (Class 12 · CBSE · Science Biology), with the correct answer and a step-by-step solution.
easy · MCQ · Q-BB1492
A cross between a red-flowered snapdragon (Antirrhinum majus) and a white-flowered snapdragon yielded pink flowers in the F1 generation. When F1 plants were selfed, the F2 generation showed phenotypic and genotypic ratios respectively as:
- A.3:1 and 1:2:1
- B.1:2:1 and 1:2:1Correct answer
- C.1:2:1 and 3:1
- D.2:1:1 and 1:2:1
Solution
In incomplete dominance, such as flower color in snapdragon, the phenotypic ratio and genotypic ratio in the F2 generation are both identical: ( red : pink : white).
More from Principles of Inheritance and Variation
- Which of the following conditions correctly describes the chromosomal aberration responsible for Down's syndrome?
- In a dihybrid cross involving two linked genes, the frequency of recombinant types is generally:
- ABO blood grouping in humans is an example of which of the following genetic phenomena?
- A true-breeding tall plant is crossed with a true-breeding dwarf plant. The F2 generation is self-pollinated. Out of 1000 individuals in th…
Practise more Biology
Sign up free for adaptive practice on this chapter, with instant feedback and hints on every question.
Start practising freeFree to start · No credit card needed