Which of the following statements is true regarding Mendel\'s observations of th

Question

Which of the following statements is true regarding Mendel's observations of the phenotype of the plants obtained during the first and second generations

1. Mendel crossed DD and dd plants and he observed that the F1 heterozygotes produced two kinds of gametes in equal proportions. Upon self fertilization, the two kinds of gametes produced by the homozygotes, produced four kinds of zygotes DD, DD, dd, dd. However because of dominance, three of these genotypes have the same phenotype. Therefore in F2 the plants were either tall or dwarf in a ratio of 3:1
2. Mendel crossed DD and dd plants and he observed that the F1 heterozygotes produced two kinds of gametes in equal proportions. Upon self fertilization, the two kinds of gametes produced by the heterozygotes, produced four kinds of zygotes DD, Dd, dD, dd. However because of dominance, three of these genotypes have the same phenotype. Therefore in F2 the plants were either tall or dwarf in a ratio of 4:1
3. Mendel crossed DD and dd plants and he observed that the F1 heterozygotes produced two kinds of gametes in equal proportions. Upon self fertilization, the two kinds of gametes produced by the heterozygotes, produced four kinds of zygotes DD, Dd, dD, dd. However because of dominance, three of these genotypes have the same phenotype. Therefore in F2 the plants were either tall or dwarf in a ratio of 3:1
4. Mendel crossed DD and dd plants and he observed that the F1 homozygotes produced two kinds of gametes in equal proportions. Upon self fertilization, the two kinds of gametes produced by the heterozygotes, produced four kinds of zygotes DD, DD, DD, dd. However because of dominance, three of these genotypes have the same phenotype. Therefore in F2 the plants were either tall or dwarf in a ratio of 3:2
5. Mendel crossed DD and dd plants and he observed that the F1 homozygotes produced two kinds of gametes in equal proportions. Upon self fertilization, the two kinds of gametes produced by the homozygotes, produced four kinds of zygotes DD, Dd, dD, dd. However because of dominance, three of these genotypes have the same phenotype. Therefore in F2 the plants were either tall or dwarf in a ratio of 3:1

Explanation / Answer

1. Mendel crossed DD and dd plants and he observed that the F1 heterozygotes produced two kinds of gametes in equal proportions. Upon self fertilization, the two kinds of gametes produced by the homozygotes, produced four kinds of zygotes DD, DD, dd, dd. However because of dominance, three of these genotypes have the same phenotype. Therefore in F2 the plants were either tall or dwarf in a ratio of 3:1

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