Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 12, Problem 18TYK
Design an Experiment Imagine that you are a breeder of Labrador retriever dogs. Labs can be black, chocolate brown, or yellow. Suppose that a yellow Lab is donated to you and you need to know its genotype. You have a range of dogs with known genotypes. What cross would you make to determine the genotype of the donated dog? Explain how the resulting puppies show you the Lab’s genotype.
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Using Mendel’s lines of peas, describe how you would use a test cross experimental design to determine the genotype of a pea plant with purple flowers. Be very specific in describing your experimental design and how you would interpret your results based on the proportion of offspring phenotypes. Make sure to include all possible offspring phenotypes in your answer and what the proportion of phenotypes tells you about the purple plant genotype.
Professor John decided to breed bunnies during stay-at-home because why not. She performed the following cross:Parents:brown fur, gray nose x white fur, gray noseOffspring:3/8 white fur, gray nose1/8 white fur, white nose3/8 brown fur, gray nose
1/8 brown fur, white noseBased on the phenotypes of the offspring, what are the genotypes of the parents? Make sure you define your genotypes (ie B is brown fur, b is white fur)
Give typing answer with explanation and conclusion
"B"-yellow "b"-green. When 2 heterozygous parents for both traits are crossed it's
called a dihybrid cross- AaBb × AaBb. Fill in the Punnett Square with the genotypes of this cross.
Chapter 12 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 12.1 - Two pairs of traits are segregating in a cross....Ch. 12.1 - If, instead, the four phenotypes in question 1...Ch. 12.2 - Palomino horses have a golden coat color, with a...Ch. 12.2 - A true-breeding rabbit with agouti (mottled,...Ch. 12 - The dominant C allele of a gene that controls...Ch. 12 - In peas, the allele Le produces tall plants and...Ch. 12 - Prob. 3TYKCh. 12 - What genotypes, and in what frequencies, will be...Ch. 12 - In addition to the two genes in problem 4, assume...Ch. 12 - Prob. 6TYK
Ch. 12 - In cats, the genotype AA produces tabby fur color;...Ch. 12 - Prob. 8TYKCh. 12 - The ability of humans to taste the bitter chemical...Ch. 12 - A man is homozygous dominant for alleles at 10...Ch. 12 - In guinea pigs, an allele for rough fur (R) is...Ch. 12 - Prob. 12TYKCh. 12 - Some recessive alleles have such a detrimental...Ch. 12 - In chickens, feathered legs are produced by a...Ch. 12 - A mix-up in a hospital ward caused a mother with O...Ch. 12 - Having malformed hands with shortened fingers is a...Ch. 12 - Prob. 17TYKCh. 12 - Design an Experiment Imagine that you are a...Ch. 12 - Prob. 19TYKCh. 12 - Prob. 1ITDCh. 12 - Prob. 2ITDCh. 12 - Half of the worlds population eats rice at least...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Understand the the given genetic problem. Draw the Punnet square using a clean paper and analyze the results. A cross between true breeding plants for red (R) flower and white (r) flower results to all red flowers in F1. Based on the results, red color is dominant while white color is recessive. Use Punnett square to show the result of genetic cross and analyze the results.arrow_forwardA farmer is interested in an interesting colour in his lilies. Colour in lilies is controlled by a single autosomal gene (Gene H) with two alleles. The H-allele results in a purple flower, while the recessive allele results in a white flower. The farmer has a plant that has purple flowers. Can you suggest how the farmer can determine the genotype (HH or Hh) of his purple flowered plant in a single cross? Describe this cross and provide details on how you would interpret the results.arrow_forwardPetunias can be blue, red, or violet. When a blue flower is crossed with a red flower, all the resulting flowers are violet. What would be the genotypes of a cross if a blue petunia were crossed with a red one? Justify your answer by drawing a Punnett square.arrow_forward
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- You are working with a new species of spider in the lab. Wild type spiders have black legs and long mandibles. Mutants have black/brown striped legs and short mandibles. You perform a cross between wild type and mutant spiders. Your results : 5,502 wild type; 5,877 mutant; 69 black/brown striped, long mandibles; 52 black, short mandibles. What information does the recombination frequency tell you about the traits? (You will need to solve the RF first if you haven't done so in the other problem.) * A. Crossing over occurs frequently between the two traits. B. They are unlinked genes. C. They are located on separate chromosomes D. They are located very close together on the same chromosome.arrow_forwardYellow flower color is dominant to white flower color in a particular species of flowering plants. How can a farmer tell if his yellow-flowered plants are homozygous for that trait (flower color), or heterozygous? Illustrate your answer by means of simple crosses.arrow_forwardChoose a trait from mendel’s sweet pea experiment and work out the problem of performing a monohybrid cross on two parents. Provide the genotype and phenotype of the parents and the F1 progeny. Then provide the the genotypes and phenotypes ratios in the f2 generationsarrow_forward
- You cross two wildtype (short-tailed) chipmunks, and collect a male offspring with a particularly long tail, which you name Dale. Tail length is controlled by the gene T, which is a maternally imprinted gene in chipmunks. Choose the best answers to complete the following statements. choose the correct answer option for each Dale’s allele for a long tail was inherited from the female/male/ unknown parent. That parent did not express the long tail phenotype because the allele was inherited from the parent’s own mother/father/unknown parent . If one of Dale’s offspring inherits the long tail allele from him, it will not /will/either will or will not express that phenotype.arrow_forwardHow would I figure this out using a punnett square? Next, you perform a cross of two heterozygous, red-eyed flies. They have 100 offspring. How many of these offspring do you predict will have red eyes? Show your work using a Punnett square. [Use letters R and r to designate the alleles].arrow_forwardA researcher crossed a homozygous yellow seed plant (YY) and a heterozygous yellow seed plant (Yy). Determine the genotype and phenotype ratios of the offspring.arrow_forward
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