You do a cross between a blue and a white flower. You expected to see progeny...
You do a cross between a blue and a white flower. You expected to see progeny produced in the typical mendelian ratio of 3:1. You observe 65 blue flowers and 35 white flowers. After performing a Chi Square calculation do you accept or reject the hypothesis that the color pigment for this particle flower is controlled by one gene?
Homework Answers
I reject the null hypothesis as the given count of blue and white flowers is not in the classic mendelian ratio of 3:1 ...So it probably implies the colour of the flower is not controlled by one gene..
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You do a cross between a blue and a white flower. You expected
to see progeny...
Chi square: You cross a red heterozygous flower with a white homozygous flower and get the...
Chi square: You cross a red heterozygous flower with a white homozygous flower and get the following progeny: 55 red and 45 white. You hypothesis that the plants are following Mendelian Genetics inheritance rules. You preform a chi-square analysis to test your hypothesis. Do you.. a. not accept your hypothesis b. accept your hypothesis c. reject your hypothesis d. fail to reject your hypothesis
A horticulturist sought to test the hypothesis that flower bolor in the plant blue-eyed Mary Collins...
A horticulturist sought to test the hypothesis that flower bolor in the plant blue-eyed Mary Collins parviflorais controlled by a single gone locus where paired alles have a dominant-recessive relationship. The horticulturist crossed two plants that produced flowers of different colors, white and magenta, which he believed were true breeding The horticulturist observed that all of the plants resulting from his cross produced blue flowers. When the horticulturist crossed the F1 plants with each other he obtained the following F2...
7. A red snapdragon flower is crossed with a white snapdragon flower. All of the offspring...
7. A red snapdragon flower is crossed with a white snapdragon flower. All of the offspring are pink snapdragon flowers. You study the pink snapdragon flowers and discover that these flowers produce red pigment but at low levels, thus causing the pink color. What type of genetic inheritance is this? What is the genotype of the red snapdragon flower? What is the genotype of the white snapdragon flower? What is the genotype of the pink snapdragon flower? You cross a...
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...
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...
A plant called blue-eyed grass normally produces blue flowers. However, plants producing white flowers also occur,...
A plant called blue-eyed grass normally produces blue flowers. However, plants producing white flowers also occur, because an allele for the gene coding for the protein that produces the blue pigment is non-functional. This white-flowered allele (W) is dominant to the blue-flowered allele (w), but generally occurs at very low frequency in populations. Suppose you crossed a homozygous dominant plant with a homozygous recessive plant, and the result is 16 seeds. If you plant these, assuming simple Mendelian genetics, how...
2 scientists self - fertilize a blue flowered daisy and grow 100 progeny plants that consist...
2 scientists self - fertilize a blue flowered daisy and grow 100 progeny plants that consist of 55 blue - flowered plant, 22 purple - flowered plants and 23 white - flowered plants. One of them believes this is the result of segregation of two alleles at one locus and that progeny ratio is 1:2:1. The other think the progeny phenotypes are the result of two epistatic genes that the ratio is 9:3:4. They both ask you to resolve their...
(1) The hardy geranium, Geranium lanuginosum, is native to the Himalayas and is widely cultivated due...
(1) The hardy geranium, Geranium lanuginosum, is native to the Himalayas and is widely cultivated due to its brilliant blue flowers, but flowers can be dark blue, light blue, speckled blue, and white. You have identified 2 genes involved in flower color. The alabaster gene catalyzes the conversion of a colorless precursor into a light blue pigment. The amount of pigment that is produced is determined by the number of functional copies of the alabaster gene. Normally, the pigment is...
Genetics questions, i need help! 1) For the Drosophila red/white cross, you crossed red females and...
Genetics questions, i need help!
1) For the Drosophila red/white cross, you crossed red females and white males (w'w, wy). a) Draw the Punnett Square for this cross (F1). What is the ratio of red females:red males? b) Suppose in the F1 generation, you observed 70 red females and 30 red males. Do a Chi- Square Test to test the hypothesis of the ratio you found in part (a) above. Do you accept or reject the hypothesis? c) Draw the...
either blue shels and long antenna, or green shells and short antenna. Crossing these lines yields progeny with blue shells and long antenna. Crossing F, progeny with beetles that have green shel...
either blue shels and long antenna, or green shells and short antenna. Crossing these lines yields progeny with blue shells and long antenna. Crossing F, progeny with beetles that have green shell and short antenna yield the following progeny: 44. You are doing ab work with a new species of beetle. You have isolated lines that breed true for Blue shell, long antenna 82 Green shell, short antenna78 Blue shell,short antenna 37 Green shell, long antenna 43 Total 240 You...
A horticulturist sought to test the hypothesis that flower bolor in the plant blue-eyed Mary Collins parviflorais controlled by a single gone locus where paired alles have a dominant-recessive relationship. The horticulturist crossed two plants that produced flowers of different colors, white and magenta, which he believed were true breeding The horticulturist observed that all of the plants resulting from his cross produced blue flowers. When the horticulturist crossed the F1 plants with each other he obtained the following F2...
7. A red snapdragon flower is crossed with a white snapdragon flower. All of the offspring are pink snapdragon flowers. You study the pink snapdragon flowers and discover that these flowers produce red pigment but at low levels, thus causing the pink color. What type of genetic inheritance is this? What is the genotype of the red snapdragon flower? What is the genotype of the white snapdragon flower? What is the genotype of the pink snapdragon flower? You cross a...
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) The hardy geranium, Geranium lanuginosum, is native to the Himalayas and is widely cultivated due to its brilliant blue flowers, but flowers can be dark blue, light blue, speckled blue, and white. You have identified 2 genes involved in flower color. The alabaster gene catalyzes the conversion of a colorless precursor into a light blue pigment. The amount of pigment that is produced is determined by the number of functional copies of the alabaster gene. Normally, the pigment is...
Genetics questions, i need help!
1) For the Drosophila red/white cross, you crossed red females and white males (w'w, wy). a) Draw the Punnett Square for this cross (F1). What is the ratio of red females:red males? b) Suppose in the F1 generation, you observed 70 red females and 30 red males. Do a Chi- Square Test to test the hypothesis of the ratio you found in part (a) above. Do you accept or reject the hypothesis? c) Draw the...
either blue shels and long antenna, or green shells and short antenna. Crossing these lines yields progeny with blue shells and long antenna. Crossing F, progeny with beetles that have green shell and short antenna yield the following progeny: 44. You are doing ab work with a new species of beetle. You have isolated lines that breed true for Blue shell, long antenna 82 Green shell, short antenna78 Blue shell,short antenna 37 Green shell, long antenna 43 Total 240 You...
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