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19 Feb 2018
In drosophila, a heterozygous female for the X-linked recessive traits a,b and c was crossed to a male that is mutant for a, b and c on its one X-chromosome. The offspring occurred in the phenotypic ratios in the following table, and no other phenotypes were oberserved. Genotype: + b c, a++, abc, +++, a+c, +b+ Number of individual: 460, 450,32,38,11,9 a) what is the genetic arrangement (correct sequence ) of the alleles of these on the X chromosome of the female. b) determine the distance between each gene c) what progeny phenotypes are missing and why?
In drosophila, a heterozygous female for the X-linked recessive traits a,b and c was crossed to a male that is mutant for a, b and c on its one X-chromosome. The offspring occurred in the phenotypic ratios in the following table, and no other phenotypes were oberserved. Genotype: + b c, a++, abc, +++, a+c, +b+ Number of individual: 460, 450,32,38,11,9 a) what is the genetic arrangement (correct sequence ) of the alleles of these on the X chromosome of the female. b) determine the distance between each gene c) what progeny phenotypes are missing and why?
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Jamar FerryLv2
20 Feb 2018
