A. Part 1: F1 Generation Yellow Sampaguita- Homozygous recessive (cc) White Sampaguita- Homozygous dominant (CC) a. With the given sampaguita flowers, you will be crossing these two samples and identify the offspring using a punnet square. Indicate the ratio between each offspring B. Part 2: F2 generation a. With the results you have from Part 1 and using a punnet square, what are the offspring of your heterozygous parents to identify the F2 generation. Indicate the ratio between each offspring.

A. Part 1: F1 Generation Yellow Sampaguita- Homozygous recessive (cc) White Sampaguita- Homozygous dominant (CC) a. With the given sampaguita flowers, you will be crossing these two samples and identify the offspring using a punnet square. Indicate the ratio between each offspring B. Part 2: F2 generation a. With the results you have from Part 1 and using a punnet square, what are the offspring of your heterozygous parents to identify the F2 generation. Indicate the ratio between each offspring.

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Description: A. Part 1: F1 GenerationYellow Sampaguita- Homozygous recessive (cc)White Sampaguita- Homozygous dominant (CC)a. With the given sampaguita flowers, you will be crossing these two samples and identify the offspring using a punnet square. Indicate the

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter8: Patterns Of Inheritance

Section: Chapter Questions

Problem 5RQ: Imagine that you are performing a cross involving seed texture in garden pea plants. You cross...

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a. 1 dominant allele will contribute 120/10 = 12 cm to the base height of the plant.b. The height of the parent plant 1 Genotype of the parent plant 1 – D1D1D2D2D3D3d4d4d5d5 The height of the parent plant 2 Genotype of the parent plant 2 – d1d1d2d2d3d3D4D4D5D5Contributing alleles – D4D4D5D5. The height of the plant without any contributing alleles would be 80 cm. The plant with genotype d1d1d2d2d3d3D4D4D5D5 has 4 contributing allele each of which contributes 12 cm to the base. Hence, the height of the plant with genotype d1d1d2d2d3d3D4D4D5D5 would be 80 + 12 + 12 + 12 + 12 = 128 cm. c. Parents – D1D1D2D2D3D3d4d4d5d5 × d1d1d2d2d3d3D4D4D5D5 Gametes – D1D2D3d4d5 × d1d2d3D4D5 F1 generation – D1d1D2d2D3d3D4d4D5d5 The height of the plants of F1 generation = 80 + 12 + 12 + 12 + 12 + 12 = 140 cm Hence, Genotype of the F1 = D1d1D2d2D3d3D4d4D5d5 Phenotype of…
a. State a hypothesis explaining the inheritance of flower color in painted tongues. b. Assign genotypes to the parents, F₁ progeny, and F2 progeny for all five crosses. c. In a cross between true-breeding yellow and true-breeding lavender plants, all of the F1 progeny are bronze. If you used F₁ plants to produce and F2 generation, what phenotypes in what ratios would you expect? Are there any genotypes that might produce a phenotype that you cannot predict from earlier experiments, and if so, how might this alter the phenotypic ratios among the F2 progeny?
1. Complete the Punnett square for a cross between a homozygous red-flowered snapdragon (RR) and a homozygous white-flowered snapdragon (WW). Give the ratio for the phenotype and the genotype. Key F1 Genotypic Ratio: RR – red Phenotypic Ratio: wW- white RW- pink 2. Complete the Punnett Square for a cross between two Fi plants (WW). Give the phenotypic ratio for the F2 generation. F2 Phenotypic ratio: 3. Cite some possible applications of genetics to plant breeding.
ibri 12 BIU A - A 4. 11. Mendel crossed peas having round seeds and yellow cotyledons with peas having wrinkled seeds and green cotyledons. All the F1 plants had round seeds with yellow cotyledons. a. What are the genotypes of the parent plants? b. What gametes could be produced by the parent with round seeds and yellow cotyledons? C. What gametes could be produced by the parent with wrinkled seeds and green cotyledons? d. What is the genotype of the F1 plants? e. What gametes could be produced by the F1 plants? hp
A. 1. Hybridization of a homozygous dominant and homozygous recessive plant was conducted. What is the probability that the F2 will have the phenotype big oval shaped yellow leaves, white flowers, and pink fruits? 2. Hybridization of a homozygous dominant and homozygous recessive plant was conducted. What is the probability that the F2 will have the phenotype green, small and spade shaped leaves with pink and rounded fruits? 3. Hybridization of a homozygous dominant and homozygous recessive plant was conducted. What is the probability that the F2 will show only all the dominant phenotypes? 4. Hybridization of a homozygous dominant and homozygous recessive plant was conducted. How many of 10,000,000 F2 progeny will have a fully heterozygous genotype? 5. Hybridization of a homozygous dominant and homozygous recessive plant was conducted. How many of 10,000,000 F2 progeny will have a full set of recessive phenotype? 6. Hybridization of a homozygous dominant and homozygous recessive plant…
a. What type of trait is this? How many genes and alleles are involved? Explain your answer. b. What are the genotypes of the 90 and 100 cm plants respectively in the parental generation? c. What is the possible genotype, or genotypes, of the 95 cm class in the F2? c. What is the possible genotype, or genotypes, of the 95 cm class in the F2?
4 *The normal color of snapdragons is red. Some pure lines showing variation in flower color have been found. Analyze the following crosses and do the following:² c. Explain the inheritance of these colors (include number of genes, alleles and dominance relationships). d. Determine the genotypes of the parents and the F1 of each cross. e. Propose a biochemical pathway for flower color production in snapdragons. F₂ Parents 1. orange x yellow 2. red x orange 3. red x yellow 4. red x white F₁ orange red red red red 5. yellow x white 9 red: 3 yellow: 4 white 6. orange x white 9 red: 3 orange: 4 white 7. red x white 9 red: 3 yellow: 4 white Hint: Come up with a possible pathway first, it helps to organize your thoughts. red 3 orange: 1 yellow 3 red: 1 orange 3 red: 1 yellow 3 red: 1 white red
1. Use the following information to answer the question: Parental cross is RrYy x RrYy Seed Shapes are R-round, r-wrinkled Seed colors are Y-yellow, y-green Based on the information given, what is the phenotype ratio of the offspring of this cross? 2. A pea plant heterozygous for height and seed color (TtYy) is crossed with a pea plant heterozygous for height but homozygous recessive for seed color (Ttyy). If 80 offspring are produced, how many are expected to be tall and have yellow seeds? 3. What is the chromosome theory of inheritance? How does this theory explain Mendel's results? 4. A cross between two organisms heterozygous for two different genes (AaBb) results in a 9:3:3:1 phenotype ratio among the offspring. Is the offspring's genotype ratio the same? Explain your answer.…
V. Two Gene Pairs (Extra Credit) 1... A. In peas, the allele for tall plants (T) is dominant over the allele for short plants (t). The allele for smooth peas (S) is dominant over the allele for wrinkled peas (s). Use this information to cross the following parents. I 1. heterozygous tall and smooth X heterozygous tall and smooth 2. heterozygous tall, wrinkled X short, wrinkled AL.
A. In corn, yellow kernels (Y) are dominant to white kernels (y). If you cross two plants with the Yy genotype, what percentage of the offspring will have yellow kernels? B.What percentage of the offspring will have the same genotype as the parent plants? C.Say you're also interested in corn plant height where tall plants (T) are dominant to short plants (t). You want to save some time and just cross your plants once. The P1 genotypes are YyTT and YYTt. Will you get any short plants with yellow kernels from this cross? Why or why not? D. If these traits, kernel color and height were linked, how would this affect your experimental outcomes? Would you expect the laws of Mendelian genetics to still apply? Why or why not ?
9. In the F2 Generation, both the male and female pea plants are heterozygous for round/wrinkles seeds. 1)Draw a Punnett square that shows this cross. 2)What are the possible genotypes? 3)What are the possible phenotypes? 10. In pea plants, the allele for smooth pods (P) is dominant over the allele for pinched pods (p). Construct a Punnett Square that shows a cross between an PP plant and an Pp plant. Predict what percent of the offspring are likely to have smooth pods. Essay: Is it possible for a son to inherit an allele on an X chromosome from his father? Explain why or why not.
2. 3 1. In radishes, flower color may be red, purple, or white. The edible portion of the radish may be long or oval. When only flower color is studied, no dominance is evident, and red x white crosses yield all purple. Determine the appropriate allele symbols and indicate which genotypes lead to which a. phenotypes. b. If the F1 purple plants described above are interbred, what will be the genotype and phenotype ratios in the F2 generation? C. Regarding radish shape, long is dominant to oval in the typical Mendelian fashion. What will be the phenotype ratios in the F2 generation of a cross between a true-breeding red, long radish and a white, oval radish?