What will be the F2 phenotypic ratio if a red-flower male plant is bred with a white-flower female plant, where red flower color is dominant over white flower color?
Correct answer: C. In ratio of 3:1
- A. In ratio of 1:2
- B. In ratio of 1:1
- C. In ratio of 3:1
- D. In ratio of 1:3
Explanation
When heterozygous red-flowered F1 plants (Rr) self-pollinate, the F2 generation results in a 3 red : 1 white phenotypic ratio.
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About Inheritance
Mendel's laws explain segregation, independent assortment and the prediction of genetic ratios using alleles, genotypes and phenotypes. The chapter also covers linked genes, recombination and crossing over during meiosis, then applies pedigree reasoning to X-linked recessive traits, which show different inheritance patterns in males and females.
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