Campbell Biology (11th Edition)
Campbell Biology (11th Edition)
11th Edition
ISBN: 9780134093413
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Chapter 15, Problem 5TYU

Using the information from problem 4, scientists do a further testcross using a heterozygote for height and nose morphology. The offspring are tall upturned snout, 40; dwarf upturned snout, 9; dwarf downturned snout, 42; tall downturned snout, 9. Calculate the recombination frequency from these data, and then use your answer from problem 4 to determine the correct order of the three linked genes.

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In Drosophila (fruit flies), jammed wings (J), daughterless (da), curly wings (Cy), star eyes (S), and a black body (b) are determined by genes located on the same chromosome. Gene Combination Recombination Frequency J and Cy 34.9 J and da 1.7 S and Cy 4.8 Cy and b 42.4 S and da 38 b and S 47.2 Which of the following options shows the gene sequence on this chromosome? Select one: a. b J Cy da S b. S Cy J da b c. S J da Cy b d. b J da Cy S e. J S da Cy b
Consider the recombination frequencies data below from a series of two-point crosses that were carried out for genes found at seven loci (a, b, c, d, e, f, and g). Use this data to answer the following questions. The seven genes above are found on how many linkage groups? Loci a and b a and c a and d a and e a and f a and g b and c b and d b and e b and f b and g a. 7 linkage groups b. 5 linkage groups c. 4 linkage groups O d. 3 linkage groups % Recombination 50 50 50 50 50 50 50 50 50 29 11 Loci c and d c and e c and f c and g d and e d and f d and g e and f e and g fand g % Recombination 29 41 50 50 12 50 50 50 50 18 (1)
You have determined that the gene order for three linked genes being studied is CBA. The number of recombinants resulting from crossover between genes A and B alone totals 40 and 42, while the double-crossover progeny total 4 and 6. What is the recombination frequency between genes A and B if the total number of progeny from the cross is 1000? O 0.102% O 0.092% O 10.2% O 0.082% O 8.2% O 1% O 9.2%

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Campbell Biology (11th Edition)

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