One mechanism by which viruses may cause cancer is to interrupt the genetic regulatory sequences of repressor proteins. Which of the following types of viruses is most likely to be involved in causing cancer by this mechanism?
A) +ssRNA viruses
B) dsRNA viruses
C) -ssRNA viruses
D) retroviruses
E) both +ssRNA and -ssRNA viruses
D
Bloom's Taxonomy: Application
Section: The Role of Viruses in Cancer
Learning Outcome: 13.15
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In Mendel's peas, an individual heterozygous for seed color:
A. has only one kind of allele for seed color. B. has two different alleles for seed color. C. will express the dominant allele. D. will express the recessive allele. E. has two different alleles for seed color and will express the dominant allele.
Genes located along the X chromosome:
A. have a full set of complementary alleles on the Y chromosome. B. are called X-linked genes. C. are contributed solely by the female parent. D. are always recessive to genes located on the Y chromosome.
Amniocentesis is typically not perfomed on mothers over the age of 35. Indicate whether the statement is true or false
Which of the following is the only bacteria to photosynthesize by a pathway that produces oxygen as a by-product?
A. Eukaryotic bacteria B. Aerobic bacteria C. Cyanobacteria D. Protocells E. Archeans