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homozygous red-Towered (FR) petunia plant is cross- pollinated with a homozygous white-flowered (FW) petunia The hybrid...
1. A plant with red flowers is crossed with a white-flowered plant of the same species....
1. A plant with red flowers is crossed with a white-flowered plant of the same species. All the seeds, when grown, produce plants with red flowers. Assuming that the flower color is controlled by a single pair of alleles, which allele is dominant and which is recessive? 2. How does inbreeding increase the incidence of recessive disorders in a population? 3. Why does an individual always have only two alleles for a given gene? 4. In cats, the allele (S) for short fur...
A red flowered plant is crossed with a white flowered plant. All of the F1 plants...
A red flowered plant is crossed with a white flowered plant. All of the F1 plants produce red flowers. When the F1 plants are allowed to self-pollinate, 389 of the F2 plants have red flowers and 141 have white flowers. What are the genotypes of the parental and F1 generation plants? A. P:Red = RR, white = rr; F1 = Red RR and Rr B. P:Red =Rr, white = rr; F1 = Red Rr and rr C. P: Red =...
II. MONOHYBRID PROBLEMS WITH INCOMPLETE DOMINANCE 8. Petunia flower color is governed by two alleles, but...
II. MONOHYBRID PROBLEMS WITH INCOMPLETE DOMINANCE 8. Petunia flower color is governed by two alleles, but neither allele is truly dominant over the other. Petunias with the genotype R R are red-flowered, those that are heterozygous (R W ) are pink, while those with the (WW ) genotype have white flowers. This is an example of incomplete dominance. a. If a white-flowered plant is crossed with a red-flowered plant, what is the genotypic ratio of the F1? __________________________________________________________ b. What...
Bants and white fnowered plants show incomplete dominance ie the allele for white flowers are inc...
Bants and white fnowered plants show incomplete dominance ie the allele for white flowers are incompletely dominant and it is possible to get flowered plants b. Suppose that red flowered plants R for red flowers and the allele R' flowers are pink flowered plants, cross a pink another p nowered plant with another pink flowered plant using a Punnett square Complete the following What is the genotype of each pink fowered parent plant was it possible to get white flowered...
Activity 2. Incomplete Dominance 2a. Let's carry the flower example one generation further. Assume two pink-flowered...
Activity 2. Incomplete Dominance 2a. Let's carry the flower example one generation further. Assume two pink-flowered plants were crossed. What is the probability of each color appearing in the F2 generation? Red 2so Pink White A cross is made between a red flower and a pink flower (assume incomplete dominance). What is the probability of producing a white-flowered plant? 2b. EXTRA CREDIT In rabbits, the genotype BB produces a black coat color, but Bb produces a brown coat color. Rabbits...
How many different combinations of alleles are possible among the gametes produced by an individual that...
How many different combinations of alleles are possible among the gametes produced by an individual that is heterozygous for 5 separate (unlinked) genes? five ten sixteen thirty- two Consider a pea plant heterozygous for two dichotomous traits. flower color: PP and P_p = purple flowers; pp = white flowers. seed shape: RR and Rr = round seeds; rr = wrinkled seeds. A self-hybridizing dihybrid plant (PpRr x PpRr) generates F2 seeds that can be planted to grow into plants (di-hybrid...
Complete a dihybrid cross between a pea plant (plant 1) with white flowers and wrinkled seeds...
Complete a dihybrid cross between a pea plant (plant 1) with white flowers and wrinkled seeds with a plant (plant 2) with purple flowers and round seeds. Fill in the Punnett square between Plant 1 and Plant 2. Plant 2 is heterozygous for flower color and homozygous for seed color. What are the phenotypic ratios of the F1 generation? Phenotypes: purple flowers with round seeds: purple flowers with wrinkled seeds: white flowers with round seeds: white flowers with wrinkled seeds:...
For questions 5 and 6: Tall (T) is dominant to short (t) 5. Ifa homozygous tall...
For questions 5 and 6: Tall (T) is dominant to short (t) 5. Ifa homozygous tall plant is crossed with a short plant, what percentage of the offspring will be tall? , The two parents used in this cross are called as breeding parents. 6. Iftwo heterozygous tall plants from the above are crossed, what percentage of the offspring will be short? For questions 7, 8 and 9: Purple (R) is dominant to white (r) If two white flowered plants...
8. Pea plant breeders wanted to pick healthy tall plants that were homozygous for the height...
8. Pea plant breeders wanted to pick healthy tall plants that were homozygous for the height gene. They had a collection of 10 plants that were healthy and tall, but the genotypes were unknown. How might they determine if the 10 tall plants were heterozygous or homozygous for the height gene? a. What genotypes are possible for tall pea plants? b. What cross would be most useful in distinguishing between homozygous and heterozygous tall plants? c. Explain the concept of...
35. A testcross (backcross) is used to determine: a. an individual has a dominant or recessive...
35. A testcross (backcross) is used to determine: a. an individual has a dominant or recessive phenotype. b flowers are red, pink, or white c. whether an individual is homozygous or heterozygous. d. what types of offspring could be produced 36. If red flower color is dominant over white and a homozygous red flowered plant was crossed with a homozygous white flowered plant, what percentage of their offspring in the Fi generation would have white flowers? a. b. с. 100%...
Bants and white fnowered plants show incomplete dominance ie the allele for white flowers are incompletely dominant and it is possible to get flowered plants b. Suppose that red flowered plants R for red flowers and the allele R' flowers are pink flowered plants, cross a pink another p nowered plant with another pink flowered plant using a Punnett square Complete the following What is the genotype of each pink fowered parent plant was it possible to get white flowered...
Activity 2. Incomplete Dominance 2a. Let's carry the flower example one generation further. Assume two pink-flowered plants were crossed. What is the probability of each color appearing in the F2 generation? Red 2so Pink White A cross is made between a red flower and a pink flower (assume incomplete dominance). What is the probability of producing a white-flowered plant? 2b. EXTRA CREDIT In rabbits, the genotype BB produces a black coat color, but Bb produces a brown coat color. Rabbits...
How many different combinations of alleles are possible among the gametes produced by an individual that is heterozygous for 5 separate (unlinked) genes? five ten sixteen thirty- two Consider a pea plant heterozygous for two dichotomous traits. flower color: PP and P_p = purple flowers; pp = white flowers. seed shape: RR and Rr = round seeds; rr = wrinkled seeds. A self-hybridizing dihybrid plant (PpRr x PpRr) generates F2 seeds that can be planted to grow into plants (di-hybrid...
For questions 5 and 6: Tall (T) is dominant to short (t) 5. Ifa homozygous tall plant is crossed with a short plant, what percentage of the offspring will be tall? , The two parents used in this cross are called as breeding parents. 6. Iftwo heterozygous tall plants from the above are crossed, what percentage of the offspring will be short? For questions 7, 8 and 9: Purple (R) is dominant to white (r) If two white flowered plants...
8. Pea plant breeders wanted to pick healthy tall plants that were homozygous for the height gene. They had a collection of 10 plants that were healthy and tall, but the genotypes were unknown. How might they determine if the 10 tall plants were heterozygous or homozygous for the height gene? a. What genotypes are possible for tall pea plants? b. What cross would be most useful in distinguishing between homozygous and heterozygous tall plants? c. Explain the concept of...
35. A testcross (backcross) is used to determine: a. an individual has a dominant or recessive phenotype. b flowers are red, pink, or white c. whether an individual is homozygous or heterozygous. d. what types of offspring could be produced 36. If red flower color is dominant over white and a homozygous red flowered plant was crossed with a homozygous white flowered plant, what percentage of their offspring in the Fi generation would have white flowers? a. b. с. 100%...
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