Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Textbook Question
Chapter 15, Problem 5IQ
The following recombination frequencies have been determined for several gene pairs. Create a linkage map for these genes, showing the map unit distance between loci.
j, k: 12% j, m: 9% k, l: 6% l, m: 15%
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Recombination frequencies between four genetically-linked loci in corn are shown in the following table:
Loci Recombination Frequency (%)
L and Q 20
Q and R 50
R and L 30
Q and W 13
L and W 7
What is the order of the genes on the chromosome?
(note: The same answer can be represented forward or backwards. e.g. A B C D = D C B A)
LQWR
RQWL
LRQW
QRLW
RLWQ
What would be the gene map for the following genes with known recombination frequencies? D and A is 5.1 cM, A and C is 15.8 cM, A and B is 7.8 cM, C and D is 10.7 cM, and C and B is 8.0 cM.
In a diploid plant species, an F1 with the genotype Mm Rr Ss is test crossed to a pure breeding recessive plant with the genotype mm rr ss. The offspring genotypes are as follows:
Genotype
Number
Mm Rr Ss
687
Mm Rr ss
5
Mm rr Ss
68
Mm rr ss
196
mm Rr Ss
185
mm Rr ss
72
mm rr Ss
8
mm rr ss
679
Total
1900
1. Calculate the recombination frequency between each pair of genes
Chapter 15 Solutions
Study Guide for Campbell Biology
Ch. 15 - Complete the following summary of Morgans crosses...Ch. 15 - Two normal color-sighted individuals have two...Ch. 15 - In a testcross between a heterozygote tall,...Ch. 15 - With unlinked genes, an equal number of parental...Ch. 15 - The following recombination frequencies have been...Ch. 15 - a. What is the difference between an organism with...Ch. 15 - Prob. 7IQCh. 15 - Prob. 8IQCh. 15 - Mendels law of independent assortment applies to...Ch. 15 - You have found a new mutant phenotype in fruit...
Ch. 15 - Prob. 3SYKCh. 15 - Prob. 4SYKCh. 15 - Thomas Hunt Morgan firmly established the location...Ch. 15 - Prob. 2TYKCh. 15 - Sex-linked traits a. are coded for by genes...Ch. 15 - Prob. 4TYKCh. 15 - Prob. 5TYKCh. 15 - Prob. 6TYKCh. 15 - Prob. 7TYKCh. 15 - Prob. 8TYKCh. 15 - Prob. 9TYKCh. 15 - Prob. 10TYKCh. 15 - Consider three genes on the X chromosome: A, B,...Ch. 15 - Prob. 12TYKCh. 15 - Genomic imprinting a. explains cases in which the...Ch. 15 - Prob. 14TYKCh. 15 - Prob. 15TYKCh. 15 - Suppose that alleles for an X-linked character for...Ch. 15 - Some girls who fail to undergo puberty are found...Ch. 15 - Prob. 18TYKCh. 15 - The genetic event that results in Turner syndrome...Ch. 15 - Prob. 20TYKCh. 15 - Prob. 1GPCh. 15 - Prob. 2GPCh. 15 - Prob. 3GPCh. 15 - Prob. 4GPCh. 15 - Prob. 5GPCh. 15 - Red-green color blindness is caused by a...
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- In a diploid plant species, an F1 with the genotype Mm Rr Ss is test crossed to a pure breeding recessive plant with the genotype mm rr ss. The offspring genotypes are as follows: Genotype Number Mm Rr Ss 687 Mm Rr ss 5 Mm rr Ss 68 Mm rr ss 196 mm Rr Ss 185 mm Rr ss 72 mm rr Ss 8 mm rr ss 679 Total 1900 1. Why is the recombination frequency for the outside pair of genes not equal to the sum of the recombination between the adjacent gene pairs?arrow_forwardThere are three genes located on the same chromosome: G, H, and I. The recombination frequencies between each pair of genes were determined as follows: Gene Combination Recombination Frequency G/H 15.1% G/I 7.5% H/I 22.6% Which of the following gene maps demonstrate the correct sequence of these genes?arrow_forwardThere are three genes located on the same chromosome: G, H, and I. The recombination frequencies between each pair of genes were determined as follows: Gene Combination Recombination Frequency G/H 15.1% G/I 7.5% H/I 22.6% Which of the following gene maps demonstrate the correct sequence of these genes?arrow_forward
- A 3-point test cross produces the following numbers of offspring: The yellow cells are the recombinant + + a 348 offspring that result from a single cross-over between A & G. What is the distance g x + 363 between those two genes? + X + 88 O 18.8 mu g + a 96 O 89.5 mu g + 61 O cannot be determined from the information given + X a 40 89.9 mu g x a 1 O 18.4 mu + + + 3.arrow_forwardThere are three genes located on the same chromosome: G, H, and I. The recombination frequencies between each pair of genes were determined as follows: Gene Combination Recombination Frequency G/H 15.1% G/I 7.5% H/I 22.6% Which of the following gene maps demonstrate the correct sequence of these genes?arrow_forwardIn a three point cross problem for genes Q, L, and T, you have identified the parentals and double recombinants. Using that data (shown below), what is the order of the genes? Type: Alleles parental q L t parental Q l T double cross over q L T double cross over Q l t Group of answer choices L Q T L T Q T L Q the correct answer is not availablearrow_forward
- In a diploid plant species, an F1 with the genotype Mm Rr Ss is test crossed to a pure breeding recessive plant with the genotype mm rr ss. The offspring genotypes are as follows: Genotype Number Mm Rr Ss 687 Mm Rr ss 5 Mm rr Ss 68 Mm rr ss 196 mm Rr Ss 185 mm Rr ss 72 mm rr Ss 8 mm rr ss 679 Total 1900 1. What is the gene order of these linked genes?arrow_forwardIn a mapping cross, you determine that the recombination frequency between: loci Q and P is 9% loci Q and Lis 13%. If locus Q is in between loci P and L, then the recombination frequency between P and L should be approximately: 65%. 4%. 22% 11%. 13%arrow_forwardIn a series of mapping experiments, the recombination frequencies for four different linked genes were determined as follows: vg= vestigial wings vg-b = 19 cn= cinnabar eyes vg-cn = 9 rb= reduced bristles vg-rb = 16 b= black body rb-b = 3.5 rb-cn = 6.5 cn-b = 9 Please map the genes in order on a chromosome. Which two genes are the closest together? What is your evidence?arrow_forward
- Draw the genetic map using the following two-point cross data. Locus1 Locus2 Recombination Frequency (%) Locus1 Locus2 Recombination Frequency (%) buckY captAm 50 falcoN tchallA 39 buckY falcoN 50 falcoN visioN 50 buckY natashA 11 falcoN wandA 39 buckY tchallA 50 falcoN wasP 5 buckY visioN 37 natashA tchallA 50 buckY wandA 50 natashA visioN 44 buckY wasP 50 natashA wandA 50 captAm falcoN 30 natashA wasP 50 captAm natashA 50 tchallA visioN 50 captAm tchallA 50 tchallA wandA 50 captAm visioN 50 tchallA wasP 42 captAm wandA 10 visioN wandA 50 captAm wasP 26 visioN wasP 50 falcoN natashA 50 wandA wasP 33arrow_forwardA trihybrid individual with the genotype QqRrTt is testcrossed with a ggrrtt individual. The resulting offspring are as follows: QrT QRt Qrt 11 grT 76 50 qRT 357 343 qrt 78 QRT 76 qRt Total = 1000 Determine the allele arrangement and gene order in the trihybrid parent. Give your answer using the AbC/aBc notation. Draw a chromosome map for these genes. Give your map distances to one decimal place. (Use underline or underscore (_) to draw the line for the map) a) b)arrow_forwardYou are studying four linked genes located on chromosome 2 in the fruit fly Drosophila melanogaster: adp (which contributes to obesity), b (which contributes to body color), pr (which contributes to metabolism), and vg (which contributes to wing formation). A series of crosses between pair-wise combinations of these mutations yielded the following recombination frequencies between the indicated loci: pr and adp 9% adp and b 6% pr and b 3% vg and b 10% vg and pr 7% What is the genetic distance in map units (cM) between the adp and vg loci? 16 9 6 4arrow_forward
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genetic recombination strategies of bacteria CONJUGATION, TRANSDUCTION AND TRANSFORMATION; Author: Scientist Cindy;https://www.youtube.com/watch?v=_Va8FZJEl9A;License: Standard youtube license