Imagine that you set up a three-point mapping cross to determine the order of three X-linked genes. You have recessive mutations available for all three genes: yellow, white, and echinus. A heterozygous F1 Drosophila female is crossed to hemizygous mutant male. The observed numbers and phenotypes of F2 are as follows. 4685 yellow, white, echinus 4759 wild type 80 yellow 70 white, echinus 193 yellow, white 207 Echinus 3yellow, echinus 3white Based on this data which of the above phenotypic classes represent the PARENTAL types?
Imagine that you set up a three-point mapping cross to determine the order of three X-linked genes. You have recessive mutations available for all three genes: yellow, white, and echinus. A heterozygous F1 Drosophila female is crossed to hemizygous mutant male. The observed numbers and phenotypes of F2 are as follows. 4685 yellow, white, echinus 4759 wild type 80 yellow 70 white, echinus 193 yellow, white 207 Echinus 3yellow, echinus 3white Based on this data which of the above phenotypic classes represent the PARENTAL types?
Human Heredity: Principles and Issues (MindTap Course List)
11th Edition
ISBN:9781305251052
Author:Michael Cummings
Publisher:Michael Cummings
Chapter15: Genomes And Genomics
Section: Chapter Questions
Problem 2QP: Hemophilia and color blindness are both recessive conditions caused by genes on the X chromosome. To...
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Imagine that you set up a three-point mapping cross to determine the order of three X-linked genes. You have recessive mutations available for all three genes: yellow, white, and echinus. A heterozygous F1 Drosophila female is crossed to hemizygous mutant male. The observed numbers and
4685 yellow, white, echinus
4759 wild type
80 yellow
70 white, echinus
193 yellow, white
207 Echinus
3yellow, echinus
3white
Based on this data which of the above phenotypic classes represent the PARENTAL types? Each answer yields a clue useful in following question. Choose all that apply
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