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Assume that a female fly that has disrupted wings (dsr) and a speck body (sp) is mated to a male that has cinnabar eyes (cn).
Assume that a female fly that has disrupted wings (dsr) and a speck body (sp) is mated to a male that has cinnabar eyes (cn).Phenotypically wild-type F1 female progeny were mated to males that had speck bodies, disrupted wings and cinnabar eyes, and the following progeny were observed.
Phenotype Number of offspring
wild-type 112
disrupted wings 52
speck body 22
cinnabar eyes 235
disrupted wings, speck body 241
disrupted wings, cinnabar eyes 25
speck body, cinnabar eyes 46
disrupted wings, speck body, withered eyes 117
From this information, determine which gene is in the middle.
a)dsr
b)cn
c)sp
Part B
With respect to the three genes mentioned in the problem, what are the genotypes of the parents used in making the phenotypically wild-type F1 heterozygote?
a)sp dsr cn / sp dsr cn and sp +dsr +cn + / sp +dsr +cn +
b)sp dsr cn + / sp dsr cn + and sp +dsr +cn + / sp +dsr +cn +
c)sp dsr +cn / sp dsr +cn and sp +dsr +cn / sp +dsr +cn
d)sp dsr cn + / sp dsr cn + and sp +dsr +cn / sp +dsr +cn
Part C
What is the map distance between sp and dsr?
Express your answer to the nearest whole number.
map units
Part D
What is the map distance between dsr and cn?
Express your answer to the nearest whole number.
map units
This indicates that the cn and dsrgenesare more closely related to one another than the sp and dsr genes since it is closer to the expected percentage of 56.25%. Dsr is, thus, the gene in the middle.What comprises a gene?DNA is the component of genes. Some genes serve as blueprints for the synthesis of proteins. Many genes do not, however, code for proteins. A few hundredDNAbases to more than 2 million bases make up a gene in a human.How long has the gene's personal history existed?A major new four-hour documentary by Ken Burns and Barak Goodman, "TheGene: An Intimate History," is based on the acclaimed book of the same name by Dr. Siddhartha Mukherjee.To know more aboutgenesvisit:-brainly.com/question/8832859#SPJ1...