Mutations that convert proto-oncogenes to oncogenes are mutations that cause
A. the gene to produce an altered gene product.
B. underproduction of a normal gene product.
C. overproduction of a normal gene product.
D. an increase in the number of copies of the normal gene.
E. all of these.
E
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The development of the reproductive tract and gametogenesis are primarily regulated by _____
A) gonadal steroids B) pheromones C) environmental factors D) diet
Pseudoephedrine, based on the chemical structure of ephedrine from the Gnetophyte genus Ephedra was used as a treatment for:
A. cancer B. nasal blockage C. headache D. malaria E. erectile dysfunction
If a membrane is impermeable to water, the pressure measured by the osmometer will remain constant
a. True b. False
Even the replication of DNA and the expression of genes depend on the action of ____________________. Fill in the blank(s) with the appropriate word(s)