If a person has six fingers, her genotype is _____
a. ff
b. Ff
c. FF
d. Ff or FF
D
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Twin spotting provides evidence of what genetic event?
A. Meiotic recombination B. Mitotic recombination C. Linkage D. Mutation E. Biological evolution
Differentiate between disease caused by Haemophilus influenzae and the disease caused by influenza virus.
A. One causes a mild flu, and the other causes a severe flu. B. One organism causes symptomatic disease, while the other organism always causes asymptomatic disease. C. One causes an upper respiratory disease, and the other causes a lower respiratory disease. D. One organism is a virus while the other is a fungus.
Which protective structure forms to protect certain bacteria during periods of harsh conditions?
A. Biofilm B. Capsule C. Flagella D. Endospore
The role of a metabolite that controls a repressible operon is to
A) bind to the promoter region and decrease the affinity of RNA polymerase for the promoter. B) bind to the operator region and block the attachment of RNA polymerase to the promoter. C) increase the production of inactive repressor proteins. D) bind to the repressor protein and inactivate it. E) bind to the repressor protein and activate it.