DNA, RNA, and Genetics Question
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One characteristic Mendel examined was pea pod shape. If a pea plant that is heterozygous for inflated pods (Ii) is crossed with one that is homozygous for constricted pods (ii), what are the possible genotypic and phenotypic ratios of the offspring?
- The genotypic ratio would be 1 Ii : 1 ii. The phenotypic ratio would be 1 inflated : 1 constricted.
- The genotypic ratio would be 1 II : 1 Ii : 2 ii. The phenotypic ratio would be 2 inflated : 2 constricted.
- The genotypic ratio would be 3 Ii : 1 Ii. The phenotypic ratio would be 4 constricted : 0 inflated.
- The genotypic ratio would be 1 II : 2 Ii : 1 ii. The phenotypic ratio would be 2 inflated : 2 constricted.