In pea plants, tallness(T) is dominant to shortness (t). Ahomozygous dominant plant is crossed with a homozygous recessiveone. What are the genotype(s) andphenotype(s) of this first generation ofoffspring? What would be the results if 2of the first generation offspring mated?

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4 Feb 2023

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Related questions

In pea plants, the allele for yellow seeds (Y) is dominant over the one for green seeds (y) and the allele for round seeds (R) is dominant over the one for wrinkled seeds (r). A homozygous yellow, round seed is crossed with a homozygous green, wrinkled seed. The offspring of this cross are then crossed. What is the probability that an offspring of the second generation will be green and wrinkled? (Express your answer as the simplest fraction.) _________

Hi I am studying for a biology exam and I have some questionsthat are on a review sheet that i am unsure about

1. In Tomatoes, the allele for red fruit is dominant over theallele for yellow fruit. If a plant that is homozygous for redfruit is crossed with a plant with yellow fruit â

a) what is/are the genotype(s) and the phenotype(s) of the fruitproduced in the F1 generation?

b) what is/are the genotype(s) and the phenotype(s) of the fruitproduced in the F2 generation?

c) what is the phenotypic ratio of the F2 fruit?

2. A plant with red flowers is crossed with a plant with whiteflowers. All the F1 plants produced red flowers. When the F1 plantsare allowed to self-pollinate, they produce 623 plants with redflowers and 198 plants with white flowers. What are the genotypesof the P and F1 generations?

3. In Tomatoes, the allele for red fruit isdominant over the allele for yellow fruit. Theallele for tall plants is dominant of the allele forshort plants. Find the genotypes and phenotypes ofthe F₁ and F₂ generations and the phenotypicratio of a cross between a homozygous dominant in both genes and ahomozygous recessive in both genes. The homozygous individuals arethe Parental generation.

4. In cocker spaniels, solid coat color is dominantover spotted coat. A veterinarian has a spaniel with a solidcoat. How can she unequivocally determine the genotype of thisanimal for coat color from a single breeding?

rubyserval737

n swine, erect ears are thought to be controlled by a dominant gene (E_), while drooping ears are the result of the homozygous recessive ee. The presence of a white belt running upward from the front legs over the withers (NB) is dominant to no belt (nb). If purebred Hampshires, homozygous for white belt and erect ears, are mated with purebred Durocs, homozygous for no belt and drooping ears:

a. What are the genotype and phenotype in the F1 generation?

b. If the F1 offspring are intermated, what will the genotypic and phenotypic ratios in the F2 generation be?