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- Purple flowers are dominant to white flowers. Identify the phenotypefor the following genotype Ff, FF, ff and determine if the genotype is heterozygous or homozygous. * For each row, you should select two columns. Purple flowers White flowers Heterozygous Homozygous Ff FF ff Brown eyes are dominant to blue eyes. Identify the phenotype for the following genotype BB, Bb, bb and determine if the genotype is heterozygous or homozygous. * 口 ロ口Solve the following genetic problems involving monohybrid crosses. You must pick the right letter to represent the gene in the question. You must showW your work using the Punnett square. 1. In pea plants, tall is dominant to dwarf. What are the phenotypic ratios of the offspring when a tall plant heterozygous for height is crossed with a dwarf plant? 2. Crossings between pea plants produced the following results. What is the genotype of the parents of each cross? a. Tall x Tall produced 95 tall, 29 dwarf. b. Tall x Tall produced 83 tallI, O dwarf. c. Tall x dwarf produced 73 tall, 0 dwarf.REad and analyzed the following genetic problem. Show complete solution (Genotypes of P, Punnet Square and GR,PR). 1. In the garden peas, green pod color is dominant over yellow pods. Also, round seed shape is dominant over wrinkled seed. Cross fertilization was done between a pea that is homozygous dominant for pod color with heterozygous round shape and another pea that is heterozygous for both pod color and seed shape. Determine the genotypic and phenotypic ratio of teh offspring.
- 1. The allele G for yellow stigma is completely dominant to green (g). Supposingtwo strains of autotetraploid plants are available and their genotypes are as follows:GGgg – in this plant the gene is close to the centromereGggg – in this plant the gene is far from the centromere If these two plants are crossed:a) provide the gametes that can be obtained from the two plants;b) provide the genotypic and phenotypic ratios of the offspring. 2. Consider the illustration below. Diagram the configuration you would observe at Anaphase I if crossing-over happens within the inversion. (IMAGE ATTACHED)A white-flowered plant is crossed with a pink-flowered plant. All of the F1 offspring from the cross are white. 4. Which phenotype is dominant? 5. What are the genotypes of the original parent plants? 6. What is the genotype of all the F1 offspring? 7. What would be the percentages of genotypes & phenotypes if one of the white F1 plants is crossed with a pink-flowered plant? 8. Which of Mendel's Laws is/are illustrated in this question? 9. Which cross would produce phenotypic ratios that would illustrate the Law of Dominance? C. Tt x Tt A. TT x tt B. TT x Tt D. tt x tt 10. Mendel formulated his Law of Segregation after he had: C. produced mutations D. produced hybrids A. studied F1 offspring B. studied F2 offspring1. 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.
- 1. A wild-type trihybrid soybean plant is crossed to a pure-breeding soybean plant with the recessive phenotypes pale leaf (1), oval seed (r), and short height (t). The results of the 3-point test cross are show below. Traits not listed are WT. a)What are the alleles on each homologous chromosome of the parental wild-type trihybrid soybean plant? Place the alleles in their correct gene order. Use L, R, and Phenotype Number Pale 648 Pale, oval Pale, short Pale, oval, short 64 10 I to represent dominant alleles and I, r, and t for recessive 102 alleles. Oval b) Calculate the recombination frequencies between the adjacent genes and label on your gene map. Oval, short 618 Short 84 Wild Type (all 3 loci) 98 Total 1630type P = n! (p)* (q)"* х! (n - х)! Practice Problem: You cross a true-breeding pea plant with red flowers to a true-breeding pea plant with white flowers. All of your offspring have red flowers. Which gene is dominant? Why? What is the genotype of your offspring? You then cross the offspring to each other. What ratio do you expect? Why? You count 1000 plants and look at their flowers. Your results are as follows: 740 red 260 white Does this follow a simple Mendelian inheritance pattern? Why or why not? DADT 2 MEA SUDI ND D LUT IONS2. Figure 8.10 In pea plants, round seed shape (R) is dominant to wrinkled seed shape (r) and yellow peas (Y) are dominant to green peas (y). What are the possible genotypes and phenotypes for a cross between RrYY and rrYy pea plants? How many squares do you need to do a Punnett square analysis of this cross?
- DIHYBRID CROSS Heterozygous Yellow and heterozygous round seed crossed with homozygous yellow and heterozygous round seed. Find the following: 1. Alleles of both parents (given problems) 2. Genotype 3. Phenotype ratio 4. Write the punnet square -Please answer this on the paper and explain the answer step by step. Thank you asap3.) A Heterozygous tall heterozygous red flowered plant is crossed with a Homozygous short white flowered plant. What is the genotype of the heterozygous tall heterozygous red flowered plant? TtRr What is the genotype of the homozygous short white flowered plant? ttrr Fill in the genotype in the parentheses and FOIL each parent’s genotypes: heterozygous tall heterozygous red flowered plant ( homozygous short white flowered plant (Make sure to include (genotypic ratios) For part A) make sure to have table or the phenotypic or genotypic ratios 5. In garden peas, green pod (P) is dominant to yellow pod (p) and tall stemmed (T) plants are dominant to short stemmed plants (t). Please give the genotypic and phenotypic ratios from the following crosses. a) Homozygous green pod homozygous tall stemmed plant crossed with a yellow pod (homozygous) short stemmed (homozygous) plant. b) Homozygous green pod homozygous tall stemmed plant crossed with a heterozygous green pod heterozygous tall stemmed plant. c) Heterozygous green pod heterozygous tall stemmed plant crossed with a heterozygous green pod heterozygous tall stemmed plant. d) Heterozygous green pod homozygous tall stemmed plant crossed with a yellow pod (homozygous) homozygous tall stemmed plant. These are dihybrid crosses. 7. In pea plants, flower colour and pollen shape are located on the same chromosome. A plant with purple flowers and…