In squash, fruit color is determined by one gene and fruit shape by another independently segregating gene. The white fruit allele (W) is dominant to yellow fruit allele (w) and disk shape fruit allele (D) is dominant to round-shaped fruit allele (d). A cross between a white-colored, disk-shaped squash and a white colored, round-shaped squash resulted the following offspring: 31 white, disk; 29 white, round; 9 yellow, disk; 10 yellow, round. a. What are the genotypes of the two plants that were crossed? b. Using the chi-square test, determine if your answer in letter a is acceptable. Chi computed Degree of freedom Chi tabulated Conclusion
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- White fruit color in summer squash is dependent on a dominant gene (W) and colored fruit to the recessive gene (w). In the presence of ww a dominant gene produces yellow color, but when D is not present, the color is green. Give the F2 phenotypes and the proportions expected from crossing (show the diagram) a white-fruited (WWDD) with a green-fruited (wwdd) plant.n pea plants, the appearance of flowers along the main stem is a dominant phenotype called axial and is controlled by the T allele. The recessive phenotype, produced by the E t allele, has flowers only at the end of the stem and is called terminal. Seedpod form iS determined by a second gene. The dominant phenotype inflated is controlled by allele C, and a recessive constricted form, produced by allele c. A pure breeding axial, constricted plant is crossed to one that is pure-breeding terminal, inflated. A. The F1 progeny of this cross are allowed to self-fertilize. What is the expected distribution of phenotypic classes among the F2 progeny? -> TTcc t난 CC x Et 1:2:1White fruit color in summer squash is dependent on a dominant gene (W) and colored fruit to the recessive gene (w). In the presence of ww a dominant gene D produces yellow color, but when D is not present, the color is green. Upload your solution in the google classroom. Give the: F1_phenotypes_expected_from_crossing_white_fruited_WWDD_with_green_fruited_wwdd_plant F2_phenotypes_expected_from_crossing_the_F1 F2_phenotypic_ratio_expected_from_crossing_the_F1 F2_genotypic_ratio_expected_from_crossing_the_F1 Type_of_epistatis Write all phenotypes in CAPITAL letters SEPARATED BY COMMA. Write all ratio in numerical values without spaces
- Given that yellow seeds are dominant and green seeds are recessive, what are the possible genotypes for a green plant? AA Aa aa 2. Given that yellow seeds are dominant and green seeds are recessive, what are the possible genotypes for a yellow plant? AA Aa aa. Consider the genotypes of two lines of chickens: thepure-line mottled Honduran is i/i ; D/D ; M/M ; W/W, andthe pure-line leghorn is I/I ; d/d ; m/m ; w/w, whereI = white feathers, i = colored feathersD = duplex comb, d = simplex combM = bearded, m = beardlessW = white skin, w = yellow skinThese four genes assort independently. Starting withthese two pure lines, what is the fastest and mostconvenient way of generating a pure line that has coloredfeathers, has a simplex comb, is beardless, and has yellowskin? Make sure that you showa. the breeding pedigree.b. the genotype of each animal represented.c. how many eggs to hatch in each cross, and why thisnumber.d. why your scheme is the fastest and the mostconvenientOne Trait (Monohybrid) Crosses-Complete Dominance 1. In peas, inflated pod is dominant over wrinkled. If a homozygous inflated pod plant is crossed with a homozygous wrinkled pod plant, what will be the F₂ phenotypic ratio? 2. A tall pea plant crossed with a dwarf pea plant produces offspring of which about half are tall and half are dwarf. What are the genotypes of: a. the tall parent b. the dwarf parent 3. What does "test cross" or "backcross" mean?
- Fruit weight is controlled by 4 gene pairs. The homozygous dominant weighs 200 g while the homozygous recessive weighs 80 g. Assume that the alleles have equal contribution and have cumulative effects. The F1 and F2 of the two parents below were studied. Parent 1 - D1D1D2D2D3D3d4d4 x Parent 2 - d1d1d2d2d3d3D4D4 Compute for the contribution of the dominant allele. Compute for the fruit weight of parental 1 and parental 2.1- In garden peas, yellow (Y) seed color is dominant to green (y). Because yellow and green are two different forms of the same gene (seed color), they are alleles. Use a Punnett square to show a cross between two heterozygous pea plants. What are the phenotype(s) of the offspring? What are the genotype(s) of the offspring? 2- In garden peas, yellow (Y) seed color is dominant to green (y). Because yellow and green are two different forms of the same gene (seed color), they are alleles. Use a Punnett square to show a cross between two heterozygous pea plants. What are the phenotype(s) of the offspring? What are the genotype(s) of the offspring? Use the information below to answer questions 3-6 There may be a number of possible alleles for a given gene within a population. In a multiple allele system the dominance relationships between the various alleles must be considered. One of the more familiar examples of a multiple allelic system is that of the human ABO blood group. The gene…x² R AA E Paragraph 255 129 112 1 heavy, green, long heavy, green, ovate heavy, yellow, ovate heavy, yellow, long light, yellow, oblate V light, yellow, long light, green, long light, green, ovate Normal No Spacing In an East Indian mango, three genes are linked on the same chromosome. Heavy bloom is dominant to light bloom, skin that is green is dominant to skin that is yellow, and fruit with a long shape is dominant to ovate shape. A plant that is true-breeding for the dominant traits was crossed to a light, yellow and ovate fruit. The F1 plants were then testcrossed to light, yellow and ovate fruit. The following results were obtained: 251 111 133 21 Styles Heac a) Diagram the crosses for the parental generation and F1 test cross. b) Construct a genetic map that shows the order of these three genes and the distances between them.
- For number 15-24. In man, assume that spotted skin (S) is dominant over non-spotted skin (s) and that wooly hair (W) is dominant over non-wooly hair (w). Cross a heterozygous parent (SsWw) with a heterozygous parent (Ssww) Give genotypic and phenotypic ratios of offspring. 15-18. What is the probability of producing spotted skin with non-wooly hair? 8/16 4/16 3/16 6/16 8/16 A. B. C. D. E. 19-21. What is the probability of producing non-spotted skin with non-wooly hair? A 2/16 B. 4/16 C. 1/16 D. 6/16 22-24. What is the probability of producing non-spotted skin with wooly hair? A 3/16 В. 4/16 с. 1/16 D. 9/16 E. 8/166 5 0/1 point Let's continue with these two genes that control the color and texture of tomatoes. Allele "R" generates a red coloration, and is dominant. Allele "r" generates a green col Allele "S" generates a smooth texture, and is dominant. Allele "s" generates a rough te You now decide to cross your dihybrid RrSs but this one with a tomato with Rrss. RrSs x Rrss What is the probability of getting Red tomatoes with Rough texture in this new cro Assume complete dominance and 100% penetrance and expressivity. O 1/8 3/16 O9/16 3/8 O 1/16 X x 1/4 1/2 1/1 point Later on, you made a completely new cross. But you cannot remember the ge You are sure that one parent was (Ww). You remember your Bio class back in VCU and decided to check the ratios in If this cross (Ww X ??) produced 140 plants, and 105 have purple flowers anYou have a purple-flowered pea plant, but you do not know if it is homozygous (PP) or heterozygous (Pp) for flower color because both genotypes result in the same purple phenotype. Purple color allel (P) is dominant over white flower allel (p). What would you do to determine the genotype of flower color of this plant? Lötfen birini seçin: O a. Crossing the plant with homozygous large flowered pea plant (LL) Ob. Crossing the plant with heterozygous purple flowered pea plant (Pp) Crossing the plant with homozygous dominant purple flowered pea plant (PP) d. Crossing the plant with a plant whose genotype is unknown e. Crossing the plant with homozygous recessive white flowered pea plant (pp)