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In peas, green pods (G) are dominant over yellow pods, if a homozygous dominant plant is crossed with homozygous recessive plant, what will be the phenoype of the F1 generation?

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Patrina Schowalter
Patrina SchowalterLv2
1 Apr 2019
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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 รขย€ย“

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?

1. Marfan syndrome follows a pattern of autosomal dominantinheritance. What is the chance that any child will inherit thedominant allele if one parent does not carry the allele and theother is heterozygous for it? Provide a clear explanation.

2. Somatic cells of individuals with Down's syndrome usually havean extra chromosome 21; they contain 47 chromosomes. At whichstage(s) of meiosis could a mistake alter the chromosomenumber?

3. What does it mean when an organism like Mendel's pea plants istrue breeding? In one experiment, Mendel crossed a pea plant thatbred true for green pods with one that bred true for yellow pods.All of the F1 plants had green pods. Which form of the trait (greenor yellow pods) is dominant? Explain how you arrived at yourconclusion.

4. What type of mutation has occurred in the DNA of people withsickle cell anemia? (Look back, if you need to, to see what causessickle cell.)

5. The genetic makeup of an organism is called its ____, while thephysical traits of an organism are called its ___.

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