If a cross follows Mendel's law of segregation, it results in genotypic ratio:
Correct answer: B. 1 : 2 : 1
- A. 3 : 1
- B. 1 : 2 : 1
- C. 9 : 3 : 3 : 1
- D. 9 : 3 : 2 : 1
Explanation
Produces an expected genotypic ratio of 1:2:1 among AA, Aa, & aa genotypes. The genotypic ratios produce characteristic phenotypic ratios, according to the dominance relationships of the alleles involved. an expected phenotypic ratio of 3:1 between "A" and "a" phenotypes.
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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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