An oncogene is more likely to lead to cancer than a mutant tumor suppressor gene because
A) a gain of function mutation in an oncogene need only occur in one allele before it disrupts control of the cell cycle.
B) a loss of function mutation in an oncogene is sufficient to cause unregulated cell division.
C) the mutant oncogene may inactivate telomerase.
D) a gain of function mutation in a tumor suppressor gene can promote the cell cycle.
E) a gain of function mutation in an oncogene is more likely to cause the other allele to mutate.
Answer: A) a gain of function mutation in an oncogene need only occur in one allele before it disrupts control of the cell cycle.
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________, periodic reports on the susceptibility of clinically isolated organisms to the antibiotics in current local use, are particularly valuable for tracking the emergence of new antibiotic-resistant strains of pathogens
A) Antibiotic susceptibility plates B) Antibiograms C) Direct agglutination reports D) Histograms
The basic method of DNA sequencing is the Sanger method
a. True b. False Indicate whether the statement is true or false
When examining the codons for the same amino acid, there is reduced specificity at the third position, known as third-base degeneracy. Describe an advantage to having third-base degeneracy and indicate how it may have arisen during evolution
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Mountain, basin, and hybrid sagebrush were each raised in the three different habitats where they are found. What is likely to happen to the hybrid zone?
a. It will disappear because the basin population will move up the mountain and replace the hybrids. b. It will disappear because the mountain population will move down the mountain and replace the hybrids. c. It will disappear because the basin population will move up and the mountain population will move down the mountain and replace the hybrids. d. It will persist because the hybrids have the highest fitness in the hybrid zone.