Genes A and B are on the same chromosome. What gametes could an AABB individual produce, if crossing-over and nondisjunction do not occur?
A. AB
B. AAB
C. B
D. A
E. AABB
A. AB
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The "threshold" potential of a membrane is the _____
A) point of separation from a living to a dead neuron B) lowest frequency of action potentials a neuron can produce C) minimum hyperpolarization needed to prevent the occurrence of action potentials D) minimum depolarization needed to operate the voltage-gated sodium and potassium channels E) peak amount of depolarization seen in an action potential
Which of the following diseases is caused by an encapsulated yeast?
A) coccidioidomycosis B) cryptococcosis C) histoplasmosis D) Pneumocystis pneumonia
Four of the five answers listed below provide evidence that genes are located on chromosomes. Select
the exception. a. the chromosome number is cut in half by meiosis b. original chromosome number is restored by fertilization c. some genes tend to be inherited together d. environmental factors may influence gene expression e. there are two sets of chromosomes, one maternal and one paternal in diploid forms
Which of the following treatments is not used to kill bacteria?
A) Heat B) UV radiation C) Gamma radiation D) Drying E) All these methods are commonly used to kill bacteria.