Suppose researchers studied the first chromosome of a new species and mapped three genes of interest, indicated as a, b, and c. A three‑factor cross was performed and the number of gametes formed from the F2 generation was recorded in a table. Note that the order of genes in the table is arbitrary.Calculate the recombination frequencies for each given gene pair in map units.a+ b+ c+a b ca b+ c+a+ b ca b+ ca+ b c+a b c+a+ b+ c1731763533111031After completing the gene mapping, the researchers treated individuals to induce inversions in the chromosomes. After treatment, another three‑factor cross was performed and the number of gametes formed from the F2 generation was recorded in a second table. Note that the order of genes in the table is arbitrary.a+ b+ c+abca b+ c+?+ b ca b+ ca+ b c+a b c+a+ b+ c1881852426104946Calculate the recombination frequencies for each given gene pair in map units.

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Description: Suppose researchers studied the first chromosome of a new species and mapped three genes of interest, indicated as a, b, and c. A three‑factor cross was performed and the number of gametes formed from the F2 generation was recorded in a table. Note t

The frequency of recombination is a measure of genetic linkage that is used to create a genetic…

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Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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Suppose researchers studied the first chromosome of a new species and mapped three genes of interest, indicated as a, b, and c. A three‑factor cross was performed and the number of gametes formed from the F₂ generation was recorded in a table. Note that the order of genes in the table is arbitrary.

Calculate the recombination frequencies for each given gene pair in map units.

a+ b+ c+	a b c	a b+ c+	a+ b c	a b+ c	a+ b c+	a b c+	a+ b+ c
173	176	35	33	11	10	3	1

After completing the gene mapping, the researchers treated individuals to induce inversions in the chromosomes. After treatment, another three‑factor cross was performed and the number of gametes formed from the F₂ generation was recorded in a second table. Note that the order of genes in the table is arbitrary.

a+ b+ c+	abc	a b+ c+	?+ b c	a b+ c	a+ b c+	a b c+	a+ b+ c
188	185	24	26	1	0	49	46

Calculate the recombination frequencies for each given gene pair in map units.

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