Bio328 Summer 2013 Quiz #3 Name __________________________
1. A uninfected bacteria cell lysed and another bacteria cell takes up some of the DNA from the lysed cell.
What kind of genetic exchange is this?
a. Transduction
b. Conjugation
c. Sexduction
d. Transformation
e. None of the above
2. A cross involving three genes (k, p, and w) is made between fruit flies. In this cross, the female is
heterozygous at each position while the male is homozygous recessive for all traits. The offspring are as
follows:
a) Are these genes linked? ________________
b) Fill in the table to indicate each class as either
parental, single crossover, or double crossover.
c) If the gene order is given as p – k – w, calculate the
distance between each pair of genes using the
information given in the table. Show your work.
3. What is a bacteriophage? What two types of life cycles do they commonly display?
4. What linkage phase is present if all dominant alleles are on the same chromosome?
a. Repulsion
b. Single Cross
c. Dominant
d. Coupling
Phenotype
# Type?
p k w 3 2x
p+ k+ w+ 5 2x
p k+ w 1430 P
p+ k w+ 1614 P
p k w+ 274 1x
p+ k+ w 280 1x
p k+ w+ 195 1x
p+ k w 199 1x
Total
4000