Genetic Analysis: An Integrated Approach (2nd Edition)
2nd Edition
ISBN: 9780321948908
Author: Mark F. Sanders, John L. Bowman
Publisher: PEARSON
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Chapter 2, Problem 49P
The Basalt Seed Lending Library run by the Central Rocky Mountain Permaculture Institute and the Basalt (Colorado) Regional Library (see Experimental Insight
The many different types of seed produce plants and vegetables that consistently have specific traits. Give a genetic explanation for the consistent production of the same traits from plants grown from heirloom seeds.
A goal of the seed-lending program over time is to generate seeds and plants that thrive and yield better harvests. From an evolutionary perspective, explain how saving and replanting seeds from the most productive plants each year contributes to this goal.
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Watermelon Genotypic and Phenotypic Ratio Practice
Read the information below. Determine the ratios for phenotype and genotype of each Punnett Square.You may use the example from the Punnett Square worksheet as a guide.A genetic engineer is going to cross two watermelon plants to produce seeds for spring planting. He is breeding for size and wants to have many watermelons with the phenotype for long shape as possible. In watermelons, the allele for short shape is (S) is dominant to the allele for long shape. Determine the Genotypic ratios and phenotypic ratios for each Punnett square. Which cross would yield the highest number of long watermelons?
Please make sure to write legibly to determine the capital “S” vs the lowercase “s”
1. SS x SS
2. SS x ss
3. SS x Ss
4. Ss x ss
5. Ss x ss
6. Ss x Ss
A large, genetically heterogeneous group of tomato plants was usedas the original breeding stock by two different breeders, named Maryand Hector. Each breeder was given 50 seeds and began an artificialselection strategy, much like the one described in the figure. Theseeds were planted, and the breeders selected the 10 plants with thehighest mean tomato weights as the breeding stock for the next generation. This process was repeated over the course of 12 growing seasons, and the following data were obtained:
Mean Weight of Tomatoes (pounds)Year Mary’s Tomatoes Hector’s Tomatoes1 0.7 0.82 0.9 0.93 1.1 1.24 1.2 1.35 1.3…
A heterozygous plant with genotype Aa self-pollinates, and then its offspring also self-pollinate. Find the probability that the offspring of the offspring are tall for the following genetics systems. Only plants that have two A alleles are tall.
Chapter 2 Solutions
Genetic Analysis: An Integrated Approach (2nd Edition)
Ch. 2 -
1. Compare and contrast the following terms:
a....Ch. 2 - For the cross , what is the expected genotype...Ch. 2 - 37. Galactosemia is an autosomal recessive...Ch. 2 - In mice, black coat color is dominant to white...Ch. 2 - Two parents plan to have three children. What is...Ch. 2 - Consider the cross AaBbCCAABbCc. a. How many...Ch. 2 - If a chi-square test produces a chi-square value...Ch. 2 -
8. Determine whether the statements below are...Ch. 2 - In the datura plant, purple flower color is...Ch. 2 - 10. The dorsal pigment pattern of frogs can be...
Ch. 2 - 11. Black skin color is dominant to pink skin...Ch. 2 - A male mouse with brown fur color is mated to two...Ch. 2 - 13. Figure 2.12 shows the results of Mendel’s...Ch. 2 - 14. An experienced goldfish breeder receives two...Ch. 2 -
15. The accompanying pedigree shows the...Ch. 2 -
16. A geneticist crosses a pure-breeding strain...Ch. 2 - Suppose an F1 plant from Problem 16 is crossed to...Ch. 2 - 18. In pea plants, the appearance of flowers along...Ch. 2 - 19. If two six-sided dice are rolled, what is the...Ch. 2 - Experimental Insight 2.1 describes data, collected...Ch. 2 -
21. The accompanying pedigree shows the...Ch. 2 - 22. The seeds in bush bean pods are each the...Ch. 2 - List all the different gametes that are possible...Ch. 2 - Organisms with the genotypes AABbCcDd and AaBbCcDd...Ch. 2 -
52. In humans, the ability to bend the thumb...Ch. 2 - In the fruit fly Drosophila, a rudimentary wing...Ch. 2 - In pea plants, plant height, seed shape, and seed...Ch. 2 - A variety of pea plant called Blue Persian...Ch. 2 - 29. In tomato plants, the production of red fruit...Ch. 2 - A male and a female are each heterozygous for both...Ch. 2 - 31. In a sample of families with children each,...Ch. 2 - Prob. 32PCh. 2 - A woman expressing a dominant phenotype is...Ch. 2 - Two parents who are each known to be carriers of...Ch. 2 - 33. An organism having the genotype AaBbCcDdEe is...Ch. 2 - 34. A man and a woman are each heterozygous...Ch. 2 - For a single dice roll, there is a 16 chance that...Ch. 2 - You have four guinea pigs for a genetic study. One...Ch. 2 - 37. Galactosemia is an autosomal recessive...Ch. 2 - Sweet yellow tomatoes with a pear shape bring a...Ch. 2 - A cross between a spicy variety of Capsicum annum...Ch. 2 - Alkaptonuria is an infrequent autosomal recessive...Ch. 2 - 41. Humans vary in many ways from one another....Ch. 2 - 42. In chickens, the presence of feathers on the...Ch. 2 -
43. A pure-breeding fruit fly with the...Ch. 2 - 44. Situs inversus is a congenital condition in...Ch. 2 - 45. Domestic dogs evolved from ancestral grey...Ch. 2 - Alleles of the IGF-1 gene in dogs, encoding...Ch. 2 - 49. The Basalt Seed Lending Library run by the...
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- Many beautiful varieties of roses have been produced, particularlyin the last few decades. These newer varieties often have verystriking and showy flowers, making them desirable as horticulturalspecimens. However, breeders and novices alike have noticed thatsome of these newer varieties are not very fragrant compared withthe older, more traditional varieties. From a genetic point of view,suggest an explanation why some of these newer varieties withsuperb flowers are not as fragrant.arrow_forwardWhich of the following is an example of environmental impacts on the expression of traits? Heterozygous individuals of a plant species have pink flowers, whereas homozygous individuals have either red or white flowers. An individual’s blood type depends on the interaction of the alleles A, B, or O. Animal coat color shifts in response to seasonal changes in day length and temperature.arrow_forwardWhy plant breeders intend to change the inheritance of crop plants? How plant breeders can change the heredity of crop plants? Explain your answer in briefly.arrow_forward
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