Flower colour in a plant species is determined by two genes, gene B and gene P....
Flower colour in a plant species is determined by two genes, gene B and gene P. The gene products of these genes are enzymes that convert a white substrate to an intermediate blue substrate and then to the final purple product. Note: Enzyme P can only use the Blue substrate to make the purple product.
White---GeneB----> Blue -----GeneP----> Purple
If you test cross a dihybrid, what proportion of the progeny will be White Blue or purple?
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Flower colour in a plant species is determined by two genes,
gene B and gene P....
In sweet peas, two genes (genes A and B) control flower color. The dominant alleles of...
In sweet peas, two genes (genes A and B) control flower color. The dominant alleles of both genes produce enzymes that function in the biochemical pathway shown to convert colorless precursors to a purple pigment. The recessive alleles do not produce enzyme. Therefore, at least one dominant allele of both gene A and gene B are required for purple flowers. Answer the questions about this biochemical pathway. ΑΑ, Αα BB, Bb Enzyme A Enzyme B Colorless precursor 1 Colorless precursor...
A plant's flower colour is determined by the pathway shown below: white1 ----Gene A-----> white2----Gene B---->Blue...
A plant's flower colour is determined by the pathway shown below: white1 ----Gene A-----> white2----Gene B---->Blue If you perform a dihybrid cross (ie AaBb) what will the offspring look like?
A plant's flower colour is determined by the pathway shown below: white1 ----Gene A-----> white2----Gene B---->Blue...
A plant's flower colour is determined by the pathway shown below: white1 ----Gene A-----> white2----Gene B---->Blue If you perform a dihybrid testcross (ie AaBb x aabb) what will the offspring look like? 3/4 blue, 1/4 white 9/16 white, 7/16 blue 3/4 white, 1/4 blue 1/2 white, 1/2 blue 9/16 blue, 7/16 white
A plant's flower colour is determined by the pathway shown below: white1 ----Gene A-----> white2----Gene B---->Blue...
A plant's flower colour is determined by the pathway shown below: white1 ----Gene A-----> white2----Gene B---->Blue If you perform a dihybrid testcross (ie AaBb x aabb) what will the offspring look like?
A purple flowering, smooth seed dihybrid plant (genotype PpSs)is test crossed with a white flowering, wrinkled...
A purple flowering, smooth seed dihybrid plant (genotype PpSs)is test crossed with a white flowering, wrinkled seed plant(genotype ppss).These produce progeny inthe following numbers of four phenotypes:24:76:74:26 (purple flower + smooth seed coat: purple flower + wrinkled seed coat: white flower + smooth seed coat: white flower + wrinkled seed coat). a)Explain how ratios of progeny show that the two genes are linked. b)How many map units separate the colour and seed coat genes? Show your calculations.
In squash purple seeds (P) are dominant over white (p). This gene is also on a...
In squash purple seeds (P) are dominant over white (p). This gene is also on a separate chromosome from the fruit shape and colour genes. If you cross a white round purple seeded plant (WWddPp) with a white disc fruit white seeded plant (WwDdpp) how many of the 496 progeny will be white, disc shaped, purple seeded? _________ x 496 = ________ white, disc shaped with purple seeds.
17. A diploid plant is a dihybrid for flower color (gene “R”) and leaf size (gene...
17. A diploid plant is a dihybrid for flower color (gene “R”)
and leaf size (gene “L”). Its
phenotype is red flowers and large leaves. This plant is crossed to
a tester plant (which has
white flowers and small leaves). The progeny is as follows:
23 Red, large
25 White, small
230 Red, small
235 White, large
What can be concluded about the linkage relationship of the loci in
the dihybrid parent?
A) Genes R and L are unlinked
B)...
In pea plants, flower color and pea pod color are determined by two different genes. For...
In pea plants, flower color and pea pod color are determined by two different genes. For flower color, purple is dominant over white. For pea pod color, green is dominant over yellow. Which of the following results would expect from a dihybrid cross? a. Mostly plants with purple flowers and green pea pods b. Mostly plants with purple flowers and yellow pea pods c. Mostly plants with white flowers and green pea pods d. Mostly plants with white flowers and...
Two genes of flower, one controlling blue(B) versus white(b) petals and the other controlling round(R) versus...
Two genes of flower, one controlling blue(B) versus white(b) petals and the other controlling round(R) versus oval(r) stamens, are 1000 map units apart . You cross a homozygous blue-oval plant with a homozygous white-round plant. The resulting F1 progeny are crossed with homozygous white oval palnts, and 1000 F progeny are obtained . How many of each of the four phenotypes do you expect?
In a certain plant, flowers can be either white, red or blue. The following crosses were...
In a certain plant, flowers can be either white, red or blue. The following crosses were performed with different flower colour varieties: Cross 1: P: red x red F1: all red F2: all red Cross 2: P: blue x red F1: 148 blue, 149 red, 103 white Cross 3: P: blue x white F1: all blue F2: 221 blue, 79 red, 100 white Based on the crosses, how many genes control flower colour? Include a chi-square test to support your...
In sweet peas, two genes (genes A and B) control flower color. The dominant alleles of both genes produce enzymes that function in the biochemical pathway shown to convert colorless precursors to a purple pigment. The recessive alleles do not produce enzyme. Therefore, at least one dominant allele of both gene A and gene B are required for purple flowers. Answer the questions about this biochemical pathway. ΑΑ, Αα BB, Bb Enzyme A Enzyme B Colorless precursor 1 Colorless precursor...
17. A diploid plant is a dihybrid for flower color (gene “R”)
and leaf size (gene “L”). Its
phenotype is red flowers and large leaves. This plant is crossed to
a tester plant (which has
white flowers and small leaves). The progeny is as follows:
23 Red, large
25 White, small
230 Red, small
235 White, large
What can be concluded about the linkage relationship of the loci in
the dihybrid parent?
A) Genes R and L are unlinked
B)...
In pea plants, flower color and pea pod color are determined by two different genes. For flower color, purple is dominant over white. For pea pod color, green is dominant over yellow. Which of the following results would expect from a dihybrid cross? a. Mostly plants with purple flowers and green pea pods b. Mostly plants with purple flowers and yellow pea pods c. Mostly plants with white flowers and green pea pods d. Mostly plants with white flowers and...
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