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You want to map several loci known to be in a region relative to deletions. You select alleles of these loci that are recessive to their corresponding wild-type alleles. For each locus, you cross a homozygous recessive line to the deletion heterozygote stocks. For example, for locus A and DF1, you perform the following cross: aa x DF1/+. In this cross, you notice that 2 of the F progeny have the recessive (aa) phenotype. You conclude that the A locus is deleted by the DF1 deletion You continue this type of analysis for all five loci (A - E), crossing recessive homozygotes to each deletion heterozygote. The results are shown in the chart. A " indicates that all ofthe F, progeny are wild-type. Aindicates that 2 of the progeny have the recessive phenotype. Use the data in the chart to place the five loci on the map below in the blue boxes. DF1 DF2 DF3 DF4 DFS A DF В + DF3 C DFS D + + DF2 DF4 Е + a) Order is E, A, B, D, C b) Order is A, B, C, D, E c) Order is B, D, E, A, C d) Order is D, B, A, C, E + + + + + + +

You want to map several loci known to be in a region relative to deletions. You select alleles of these loci that are recessive to their corresponding wild-type alleles. For each locus, you cross a homozygous recessive line to the deletion heterozygote stocks. For example, for locus A and DF1, you perform the following cross: aa x DF1/+. In this cross, you notice that 2 of the F progeny have the recessive (aa) phenotype. You conclude that the A locus is deleted by the DF1 deletion You continue this type of analysis for all five loci (A - E), crossing recessive homozygotes to each deletion heterozygote. The results are shown in the chart. A " indicates that all ofthe F, progeny are wild-type. Aindicates that 2 of the progeny have the recessive phenotype. Use the data in the chart to place the five loci on the map below in the blue boxes. DF1 DF2 DF3 DF4 DFS A DF В + DF3 C DFS D + + DF2 DF4 Е + a) Order is E, A, B, D, C b) Order is A, B, C, D, E c) Order is B, D, E, A, C d) Order is D, B, A, C, E + + + + + + +

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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This is an ungraded question about gene order that I found confusing.

If this question possibly violates the honor code, can I have another question that addressses this concept?

 

 

You want to map several loci known to be in a region relative to deletions. You select alleles of these loci that are recessive to their corresponding wild-type alleles. For each locus, you cross a homozygous recessive line to the deletion heterozygote stocks. For example, for locus A and DF1, you perform the following cross: aa x DF1/+. In this cross, you notice that 2 of the F progeny have the recessive (aa) phenotype. You conclude that the A locus is deleted by the DF1 deletion You continue this type of analysis for all five loci (A - E), crossing recessive homozygotes to each deletion heterozygote. The results are shown in the chart. A " indicates that all ofthe F, progeny are wild-type. Aindicates that 2 of the progeny have the recessive phenotype. Use the data in the chart to place the five loci on the map below in the blue boxes. DF1 DF2 DF3 DF4 DFS A DF В + DF3 C DFS D + + DF2 DF4 Е + a) Order is E, A, B, D, C b) Order is A, B, C, D, E c) Order is B, D, E, A, C d) Order is D, B, A, C, E + + + + + + +
Transcribed Image Text:You want to map several loci known to be in a region relative to deletions. You select alleles of these loci that are recessive to their corresponding wild-type alleles. For each locus, you cross a homozygous recessive line to the deletion heterozygote stocks. For example, for locus A and DF1, you perform the following cross: aa x DF1/+. In this cross, you notice that 2 of the F progeny have the recessive (aa) phenotype. You conclude that the A locus is deleted by the DF1 deletion You continue this type of analysis for all five loci (A - E), crossing recessive homozygotes to each deletion heterozygote. The results are shown in the chart. A " indicates that all ofthe F, progeny are wild-type. Aindicates that 2 of the progeny have the recessive phenotype. Use the data in the chart to place the five loci on the map below in the blue boxes. DF1 DF2 DF3 DF4 DFS A DF В + DF3 C DFS D + + DF2 DF4 Е + a) Order is E, A, B, D, C b) Order is A, B, C, D, E c) Order is B, D, E, A, C d) Order is D, B, A, C, E + + + + + + +
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