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A cross was made between two strains of plants that are agriculturally important. One strain was...
You test-cross plants you suspect to be AaBb dihybrids and look at 100 offspring, with the...
You test-cross plants you suspect to be AaBb dihybrids and look at 100 offspring, with the following results: Phenotype AB 22 Ab 28 ab 29 ab 21100 total (for the purposes of this quiz, do not combine parental and recombinant classes) You wish to test the hypothesis that the data are best explained as a dihybrid test cross AaBb x aabb. 1)For a chi-square test, what expected number would you use for the aB class? 2)Calculate the chi-square value for...
what is the crossover percentage between two genes that are 10 map units apart 2. (25...
what is the crossover percentage between two genes that are 10
map units apart
2. (25 points) In a monohybrid, the phenotype of the F2 generation will follow a ratio of In a dihybrid, the phenotype of the F2 generation will follow a ratio of When performing a chi-square analysis, the cutoff p value is- The degree of freedom (df) for a monohybrid and the degree of freedom for dihybrid is The formula to calculate the chi-square is 3. 25...
25. A cross is made between two different true-breeding strains of daylilies, both of which have...
25. A cross is made between two different true-breeding strains of daylilies, both of which have white flowers. All of the F1 generation plants have yellow flowers. When an F, offspring is crossed with either one of the parental strains, half of the offspring have yellow flowers and half of them have white flowers. Propose an explanation for this outcome. In your answer, you should describe the genotypes of the two parental strains and the F1 offspring, and also explain...
Question 12 only. Punnett's square analysis for the parental cross r Rr Rr 9) If we...
Question 12 only.
Punnett's square analysis for the parental cross r Rr Rr 9) If we used the above offspring (F1) in a new cross, what would be the genotypes and phenotypes of the offspring of the Fz generation? 10) What is the genotypic ratio of the F2 generation? 11) What is the phenotypic ratio of the F2 generation? 12) What would be the genotypic and phenotypic ratios of offspring from a cross between a homozygous recessive parent (r r)...
This is slides 31 and 32You perform the cross between the heterozygous pea plants described in...
This is slides 31 and 32You perform the cross between
the heterozygous pea plants described in question 3 and get the
following data. What is your null hypothesis?
tell me which of the four asci show evidence of crossing over.
It could be 0-4 of the asci shown.
Low Starch, Tall: 104
Low Starch, Short: 48
High Starch, Tall: 35
High Starch, Short: 17
This is the question 3
In this lab, we were hoping to be able to do...
3. In a true breeding cross between two orchids, one with pink flowers, and the other...
3. In a true breeding cross between two orchids, one with pink flowers, and the other with blue flowers, results in all pink-flowered orchids in the next generation. These pink-flowered orchids are allowed to self-pollinate and seed is collected. The seed is planted and the when the resulting plants flower, we observe 38 pink, 10 blue and 2 red-flowered plants. Please explain how flower color is determined in this orchid species while providing the genotypes of P, F1, and F2...
Two true breeding strains of peas, one with yellow and round seeds and the other with...
Two true breeding strains of peas, one with yellow and round seeds and the other with green and wrinkled seeds, were crossed. All the F1plants had yellow and round seeds. When these F1 plants were test crossed to the green and wrinkled parental strain, the following offspring were obtained: 30 yellow and round; 20 green and round; 26 yellow and wrinkled; 28 green and wrinkled. A) Please diagram the crosses described above, showing genotypes for each plant, using your own...
You are provided the following recombination frequencies for four traits determined by four genes on one...
You are provided the following recombination frequencies for four traits determined by four genes on one chromosome in corn (Zea mays). Based on this information, organize the genes in a way that represents their arrangement on the chromosome. dotted—yellow seedlings 7.3 mu bronze color—yellow seedlings 25 mu dotted—kernel color 26 mu kernel color—bronze color 4.8 mu dotted—bronze color 31.1 mu (3 pts) You are doing a genetics experiment with fruit flies. In the “P” generation, you cross two true-breeding flies....
1. In a cross between two pure-breeding varieties of radish, one with red and the other...
1. In a cross between two pure-breeding varieties of radish, one with red and the other with white roots, all the F1 progeny had purple roots. The F2 obtained by selfing the F1 segregated as follows: Red Purple 80222 White 98 Two models (A and B) were suggested to account for these results:- A) Root colour is controlled by a single gene with two alleles showing incomplete dominance B) Root colour is controlled by two unlinked genes showing (recessive) epistasis....
In a flowering plant, red flowers are dominant over white flowers, and short plants are dominant...
In a flowering plant, red flowers are dominant over white flowers, and short plants are dominant over tall plants. A short plant with red flowers was self-fertilized and the phenotypes for the resulting progeny recorded (see below). Based on the observed numbers, you propose the hypothesis that this dihybrid cross follows a 9:3:3:1 phenotypic ratio, whereby Mendel's laws apply. Based on this hypothesis, you calculated the expected number of progeny for each phenotype (see below). Phenotype Observed Number of Plants...
You test-cross plants you suspect to be AaBb dihybrids and look at 100 offspring, with the following results: Phenotype AB 22 Ab 28 ab 29 ab 21100 total (for the purposes of this quiz, do not combine parental and recombinant classes) You wish to test the hypothesis that the data are best explained as a dihybrid test cross AaBb x aabb. 1)For a chi-square test, what expected number would you use for the aB class? 2)Calculate the chi-square value for...
what is the crossover percentage between two genes that are 10
map units apart
2. (25 points) In a monohybrid, the phenotype of the F2 generation will follow a ratio of In a dihybrid, the phenotype of the F2 generation will follow a ratio of When performing a chi-square analysis, the cutoff p value is- The degree of freedom (df) for a monohybrid and the degree of freedom for dihybrid is The formula to calculate the chi-square is 3. 25...
25. A cross is made between two different true-breeding strains of daylilies, both of which have white flowers. All of the F1 generation plants have yellow flowers. When an F, offspring is crossed with either one of the parental strains, half of the offspring have yellow flowers and half of them have white flowers. Propose an explanation for this outcome. In your answer, you should describe the genotypes of the two parental strains and the F1 offspring, and also explain...
Question 12 only.
Punnett's square analysis for the parental cross r Rr Rr 9) If we used the above offspring (F1) in a new cross, what would be the genotypes and phenotypes of the offspring of the Fz generation? 10) What is the genotypic ratio of the F2 generation? 11) What is the phenotypic ratio of the F2 generation? 12) What would be the genotypic and phenotypic ratios of offspring from a cross between a homozygous recessive parent (r r)...
This is slides 31 and 32You perform the cross between
the heterozygous pea plants described in question 3 and get the
following data. What is your null hypothesis?
tell me which of the four asci show evidence of crossing over.
It could be 0-4 of the asci shown.
Low Starch, Tall: 104
Low Starch, Short: 48
High Starch, Tall: 35
High Starch, Short: 17
This is the question 3
In this lab, we were hoping to be able to do...
3. In a true breeding cross between two orchids, one with pink flowers, and the other with blue flowers, results in all pink-flowered orchids in the next generation. These pink-flowered orchids are allowed to self-pollinate and seed is collected. The seed is planted and the when the resulting plants flower, we observe 38 pink, 10 blue and 2 red-flowered plants. Please explain how flower color is determined in this orchid species while providing the genotypes of P, F1, and F2...
1. In a cross between two pure-breeding varieties of radish, one with red and the other with white roots, all the F1 progeny had purple roots. The F2 obtained by selfing the F1 segregated as follows: Red Purple 80222 White 98 Two models (A and B) were suggested to account for these results:- A) Root colour is controlled by a single gene with two alleles showing incomplete dominance B) Root colour is controlled by two unlinked genes showing (recessive) epistasis....
In a flowering plant, red flowers are dominant over white flowers, and short plants are dominant over tall plants. A short plant with red flowers was self-fertilized and the phenotypes for the resulting progeny recorded (see below). Based on the observed numbers, you propose the hypothesis that this dihybrid cross follows a 9:3:3:1 phenotypic ratio, whereby Mendel's laws apply. Based on this hypothesis, you calculated the expected number of progeny for each phenotype (see below). Phenotype Observed Number of Plants...
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