Female drosophila heterozygous for ebony (e+/e), scarlet (st+/st) and spineless (ss+/ss) were test crossed and the following progeny were obtained   Wild type                                67 Ebony                                      8 Ebony, scarlet                         68 Ebony, spineless                     347 Ebony, scarlet, spineless         78 Scarlet                                     368 Scarlet, spineless                    10 Spineless                                 54   Are these genes linked? Justify your answer with a chi square test Write the genotypes of the flies involved in the parental cross and test cross What is the map distance between the loci for ebony and scarlet? What is the map distance between the loci for ebony and spineless? What is the correct order of the genes on the chromosome? Calculate the coefficient of coincidence and the interference

Human Anatomy & Physiology (11th Edition)
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Female drosophila heterozygous for ebony (e+/e), scarlet (st+/st) and spineless (ss+/ss) were test crossed and the following progeny were obtained

 

Wild type                                67

Ebony                                      8

Ebony, scarlet                         68

Ebony, spineless                     347

Ebony, scarlet, spineless         78

Scarlet                                     368

Scarlet, spineless                    10

Spineless                                 54

 

  1. Are these genes linked? Justify your answer with a chi square test
  2. Write the genotypes of the flies involved in the parental cross and test cross
  3. What is the map distance between the loci for ebony and scarlet?
  4. What is the map distance between the loci for ebony and spineless?
  5. What is the correct order of the genes on the chromosome?
  6. Calculate the coefficient of coincidence and the interference
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