Question

1.what are the genotypic and phenotypic ratios and percentage of the cross between the red and white flowers?
2.what are the colors of the offspring of the f1 generation after crossing the two flowers?
3.how many will be red and white offspring ?explain.
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Answer 1

Answer:

1. A self-cross between two F1 plants results in red, pink and white flowers in the ratio of 1:2:1. The genotype of the resulting plants is also in the ratio of 1:2:1 for RR (red), Rr (pink) and rr (white) flowered plants. The cross can be shown as in the image. This is called incomplete dominance.

2. Mendel's first experiment with pea plants. The F1 generation results from cross-pollination of two parent (P) plants, and contained all purple flowers. The F2 generation results from self-pollination of F1 plants, and contained 75% purple flowers and 25% white flowers

3. R represents the red color allele for petal color, and r represents the white color allele, the homozygous RR genotype will produce the red color phenotype, the heterozygous Rr genotype will produce the pink color phenotype, and the homozygous rr genotype will produce the white color phenotype.