The allele b gives Drosophila flies a black body and b+ gives brown, the wild-type phenotype. The allele wx of a separate gene gives waxy wings and wx+ gives non-waxy, the wild-type phenotype. The allele cn of a third gene gives cinnabar eyes and cn+ gives red, the wild-type phenotype. A female heterozygous for these three genes is testcrossed, and 1000 progeny are classified with the following phenotypes. 382 cinnabar 379 black, waxy 69 waxy, cinnabar 67 black 48 waxy 44 black, cinnabar 5 wild type 6 black, waxy, cinnabar Based on this data, what is the correct map of these genes in terms of order and distance?
The allele b gives Drosophila flies a black body and b+ gives brown, the wild-type phenotype. The allele wx of a separate gene gives waxy wings and wx+ gives non-waxy, the wild-type phenotype. The allele cn of a third gene gives cinnabar eyes and cn+ gives red, the wild-type phenotype. A female heterozygous for these three genes is testcrossed, and 1000 progeny are classified with the following
|
382 cinnabar |
|
379 black, waxy |
|
69 waxy, cinnabar |
|
67 black |
|
48 waxy |
|
44 black, cinnabar |
|
5 wild type |
|
6 black, waxy, cinnabar |
Based on this data, what is the correct map of these genes in terms of order and distance?
Introduction :-
Heterozygous refers to an individual who carries two different alleles for a particular gene. Alleles are alternative forms of a gene that can produce different traits. For example, if a gene controls eye color and one allele produces blue eyes and another allele produces brown eyes, an individual who carries one blue eye allele and one brown eye allele is heterozygous for that gene.
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