Trypanosomiasis is spread by
A. mosquitoes.
B. airborne droplets.
C. tsetse flies.
D. fleas on rats.
E. contaminated water.
C. tsetse flies.
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Albinism in most animals is an epistatic trait characterized by a lack of melanin pigment in the eyes, skin, and hair. If the allele for albinism is a, the allele for brown coat color is B, and the allele for red coat color is b, which of the following genotypes would result in an albino cow?
A. AaBb B. aaBB C. aabb D. Aabb E. aaBB and aabb
cAMP levels decrease when __________. This results in __________ of CAP
a. lactose levels increase; activation b. lactose levels decrease; inhibition c. glucose levels increase; inhibition d. glucose levels decrease; activation e. glucose levels decrease; inhibition
Which of the following describes the product law?
A) The product of the sum of the probabilities of two simultaneous events describes the ability of those two events to occur together. B) The probably of two linked events occurring simultaneously is equal to the probabilities of each individual event. C) The probability of two or more independent events occurring simultaneously is equal to the product of their individual probabilities. D) The probabilities of two events occurring in a specific sequence are the product of their individual probabilities squared. E) The probability of two or more independent events occurring simultaneously is equal to the sum of their individual probabilities.
Why are regions in the centromeres and telomeres rarely expressed?
a. They are wound around histone proteins. b. They are rapidly evolving. c. They are packed in heterochromatin. d. A and B. e. All of the above.