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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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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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
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.
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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- Recombination frequencies between three loci in corn are shown in the following table: Loci Recombination frequency (%) R and W2 17 R and L2 35 W2 and L2 18 What is the order of the genes on the chromosome?arrow_forwardIn 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_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_forwardRecombination frequencies between three loci in corn are shown in the following table: Loci Recombination frequency R and W2 17 R and L2 35 W2 and L, 18 What is the order of the genes on the chromosome?arrow_forwardThe following recombinant frequencies were found between genes A, B, C, D, and E. Determine the order of these genes on the chromosome and draw a linkage map of this chromosome with the map units labeled. А, С: 10% А, D: 30% А, Е: 6% В, С: 4% В, D: 16% В, Е: 20% C, D: 20%arrow_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 cross between mice the genotypes AB/ab ab/ab, what is the recombination frequency if the progeny numbers are 72 AB/ab, 68 ab/ab, 17 Ab/ab, and 21 aB/ab? The alleles are shown for each chromosome, separated by a slash (/).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
- An individual is heterozygous for a reciprocal translocation, with the following chromosomes: A • B C D E F A • B C V W X R ST • U D E F R ST • U V W X Q. Draw the products of alternate, adjacent-1, and adjacent-2 segregations.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_forwardDraw 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_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