Part C Maize Genetics Seedling CharacteristicsIn corn, tall (7) is dominant over dwarf (t). Predict what phenotypic ratio of tall to dwarfplants you expect to observe.18. What is your expected monohybrid F2 phenotypic ratioYour null hypothesis is that there is no difference between your observed ratio and the expectedratio. Your alternative hypothesis is that there is a difference between your observed ratio andthe expected ratio.Observe the flats of seedlings grown from F2 seeds resulting from crossing F₁ hybrids.Monohybrid Cross:19. Record data below.Number of tall seedlingsNumber of dwarf seedlings.20. What are the phenotypes of the F2 generationOf the F₁ generationOf the parents66 ly emergenBIO 103 1Mo21. What are the genotypes of the F2 generationOf the F1 generationOf the parents22. If it were possible, how would you determine whether a tall individual is heterozygous orhomozygous?_23. How do the observed phenotypes of your seedlings compare with the expected F₂ ratio?To calculate your expected ratio numbers given the total number of seedlings that you counteduse the following steps:A. Determine your expected ratio. For a monohybrid cross between two F₁ plants, bothheterozygous for the trait, you would expect a 3:1 ratio. If you add 3+1, it equals 4.Therefore, each category is a fraction of 4. This means that you expect the followingfractions 3/4 and 1/4 for the two phenotypic class.B. Determine your total number of corn plants actually counted.C.Multiple each fraction by the total number of seedlings you actually counted.a. For example, if you counted 85 seedlings, you would expect the following:3/4 X 85= 64 tall seedlingsi.ii. 1/4 X 85= 21 dwarf seedlingsD. Add the 2 resulting numbers to verify that they add up to your total numberE. Compare the 2 resulting numbers (your expected numbers) to your actual numbers usingChi Square statistical analysis (to be completed later in Exercise III).Exercise II: Dihybrid CrossDihybrid crosses involve the inheritance of two different traits. Using the same stepshove in the monohybrid crosses, fill in the outline below for the following dihybrid crossant) TT, broad-leaf (recessive) bb plant is crossed with a short (recessive) tt,ant) BB plant.Parent 2+BB

Name: Part C Maize Genetics Seedling CharacteristicsIn corn, tall (7) is do
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Description: Part C Maize Genetics Seedling CharacteristicsIn corn, tall (7) is dominant over dwarf (t). Predict what phenotypic ratio of tall to dwarfplants you expect to observe.18. What is your expected monohybrid F2 phenotypic ratioYour null hypothesis is th

A monohybrid cross, is a genetic cross involving one pair traits or alleles in organisms. This type…

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18. What is your expected monohybrid F2 phenotypic ratio Your null hypothesis is that there is no difference between your observed ratio and the expec atio. Your alternative hypothesis is that there is a difference between your observed ratio an he expected ratio. bserve the flats of seedlings grown from F2 seeds resulting from crossing F₁ hybrids. onohybrid Cross: 19. Record data below. Number of tall seedlings. Number of dwarf seedlings. 20. What are the phenotypes of the F2 generation Of the F₁ generation Of the parents

18. What is your expected monohybrid F2 phenotypic ratio Your null hypothesis is that there is no difference between your observed ratio and the expec atio. Your alternative hypothesis is that there is a difference between your observed ratio an he expected ratio. bserve the flats of seedlings grown from F2 seeds resulting from crossing F₁ hybrids. onohybrid Cross: 19. Record data below. Number of tall seedlings. Number of dwarf seedlings. 20. What are the phenotypes of the F2 generation Of the F₁ generation Of the parents

Biology 2e

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ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter12: Mendel's Experiments And Heredity

Section: Chapter Questions

Problem 9RQ: A scientist pollinates a true-breeding pea plant with violet, terminal flowers with pollen from a...

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. In nature, the plant Plectritis congesta is dimorphic forfruit shape; that is, individual plants bear either winglessor winged fruits, as shown in the illustration.Wingless fruit Winged fruitPlants were collected from nature before floweringand were crossed or selfed with the following results:Number of progenyPollination Winged WinglessWinged (selfed) 91 1*Winged (selfed) 90 30Wingless (selfed) 4* 80Winged × wingless 161 0Winged × wingless 29 31Winged × wingless 46 0Winged × winged 44 0*Phenotype probably has a nongenetic explanation.Interpret these results, and derive the mode ofinheritance of these fruit-shaped phenotypes. Usesymbols. What do you think is the nongeneticexplanation for the phenotypes marked by asterisks inthe table?
yellow normal-54 yellow opaque-19 white normal- 15 white opaque-8 1. Diagram the hybrid cross showing the segregation of genes responsible for endosperm type andendosperm color in corn. Indicate all applicable gene relationships. Indicate the genotypes,phenotypes and gametes of individuals involved in all crosses. Derive the genotypic and phenotypicratios of the F2 generation using the branching method. 2. Interpret the result of your Chi-squared test.1. How many gene pairs wereresponsible for endosperm type andendosperm color in corn?2. What gene interaction was presentin the genes for the said traits?3. What are the dominant phenotypesfor each trait?4. What are the recessive phenotypesfor each trait?5. Are the genes independentlysegregating?6. What are the possible genotypes ofthe P1 and P2 that produced this F2population?7. Indicate your gene notation 3. Give the possible genotypes of each of the observed phenotypes in your sample. Determine thepossible genotypes of the parents of…
Item 11 11 of 15 In tomatoes, tall plant (D) is dominant over dwarf plant (d) and smooth fruit (H) is dominant over hairy fruit (h). A farmer crosses a tall plant with smooth tomatoes (plant A) with a dwarf and hairy fruit plant (plant B) and obtains the following results: Phenoty.pe Offspring Tall & smooth fruit 3 Tall and hairy fruit 84 Dwarf and smooth fruit 88 Dwarf & hairy fruit 4 Which of the following can be used to represent the genotype of plant A in the question above? (lines represent homologous chromosomes) d d H. D h H. D H Submit Request Answer
SUNJECT - BIOLOGY (Genetics) × PROBABILITY. Based on the give question (PpYyRr * Ppyyrr) (SEE IMAGE), compute the following probabilities. Show your solutions. 1. Probability of PpYyRr 2. Probability of PPyyRr 3. Probability of at least exhibiting wrinkled seeds 4. Probability of at least exhibiting purple flowers 5. Probability of white flower, yellow and round seeds 6. Probability of having purple flowers and green seeds and round seeds 7. Probability of having white flower and yellow seed, or, white flower and wrinkled seed.
11:50 1 Drive Dihybrid cross (two-trait crosses-each has two varieties) 4. A plant heterozygous for stem height and homozygous dominant for flower color is crossed with another plant recessive for both traits. What will the ratio of offspring be in the F1 generation? What genotypes in a parental generation will produce a 9:3:3:1 phenotypic ratio in offspring? Show your work. 5. A pure breeding, spherical yellow plant is crossed with a pure-breeding dented green plant. What will be the genotypic and phenotypic ratios in the F1 and F2 generations? 6. Which lawe Mnd his oss illustrate?
. The two loci P and Bz are normally 36 m.u. apart on thesame arm of a certain plant chromosome. A paracentricinversion spans about one-fourth of this region butdoes not include either of the loci. What approximaterecombinant frequency between P and Bz would youpredict in plants that area. heterozygous for the paracentric inversion?b. homozygous for the paracentric inversion?
4. (a) Please fill out the following table to describe the classic floral phenotypes of A, B, and C class homeotic mutants. The organ identities of the four whorls in a wild type Arabidopsis flower are filled out for you. Please fill out the rest of the table to indicate the organ identities in different whorls of the mutant flowers. ( Whorl 1 Whorl 2 Whorl 3 Whorl 4 Wild type sepals petals stamens carpels A class gene mutants B class gene mutants C class gene mutants
Large ear of corn has a total of 433 grains, including 26 Yellow & Shrunken, 73 Purple & Shrunken, 63 Yellow & Smooth, and 271 Purple & Smooth. Determine whether the ratio of corn kernels support the hypothesis that the plant is heterozygous.
A snapdragon with pink petals, black anthers, and longstems was allowed to self-fertilize. From the resultingseeds, 650 adult plants were obtained. The phenotypesof these offspring are listed here.78 red long tan26 red short tan44 red long black15 red short black39 pink long tan13 pink short tan204 pink long black68 pink short black5 white long tan2 white short tan117 white long black39 white short blacka. Using P for one allele and p for the other, indicatehow flower color is inherited.b. What numbers of red : pink : white would havebeen expected among these 650 plants?c. How are anther color and stem length inherited?d. What was the genotype of the original plant?e. Do any of the three genes show independentassortment?f. For any genes that are linked, indicate the arrangements of the alleles on the homologous chromosomes in the original snapdragon, and estimate thedistance between the genes
3. If the trait follows Mendelian rules whats may be involved in the vould be the phenotypic ratios of the mine if the tralt is consisient wtha Htance of komals smooth (R) Parental (P) offspring in the F, generation? Percentage Smooth F, Wrinkled The appearance of the kernel as smooth or wrinkled is determined by the sugar content in the endosperm and is also genetically controlled. Normal field corn, which is used for feeding livestock, is high in amylose starch. The corn we like to eat is high in sugar-yum, sweet F2 ?
15. The sticky cinquefoil (Potentilla glandulosa) is a small, deciduous plant with bright yellow flowers that lives throughout the American West, and its leaf phenotype can vary depending on environmental conditions. Inland, where there are dramatic seasonal temperature swings and unpredictable droughts, plants shed their large “summer leaves” in autumn when the temperature begins to drop. In the spring new leaves are smaller and develop in a compact rosette. This phenotype persists for several months and is thought to be an adaptation that makes the plants drought-resistant (because less water evaporates from reduced leaf surfaces). By contrast, the leaves of P. glandulosa plants growing in a coastal climate are always large. In their habitat, seasonal temperature swings are not as great and the annual cycle of winter rain and summer drought is highly predictable. Suppose you decide to explore the hypothesis that the coastal population is genetically capable of exhibiting the same seasonal shift in leaf morphology as the inland plants. Would you need access to a greenhouse where you can control variables, or would it be just as easy to do experiments in the wild? Explain your reasoning and outline your experimental design—including the variable or variables you will test in the first experiment.
9. Given the following information on corn phenotypes, particularly for the heterozygote, C sh Wx Sh Wx Where: c = colored endosperm Sh = shrunken WX = waxy Predict the resulting gametes formed after crossing over. a. sh Wx Sh WX b. С sh Wx Sh WX c. C sh Wx ShWx