A gene on the Y chromosome causes a rare disease. A woman married to a man with the disease has three children. The first two are daughters without the disease. The third is a son. What is the probability that the son will have the gene?
A) 50% B) 0% C) 25% D) 100% E) 75%
Answer: D
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The breakdown of fatty acids takes place via a process called:
A. glycolysis. B. beta-oxidation. C. oxidative phosphorylation. D. fatty acid phosphorylation. E. beta-carboxylation.
Characteristics of freshwater runoff include: a. high salinity compared to sea water
b. high nitrogen compared to sea water. c. high detritus compared to sea water. d. high phosphorus compared to sea water.
To improve communication between two neurons, it is necessary in many cases to have a healthy
A. synaptic neuron. B. interneuron. C. sensory neuron. D. motor neuron. E. Schwann cell.
Which of the following is NOT one of the types of variation that occurs within individuals?
A) genetic variation B) environmental variation C) normalizing variation D) genotype-by-environment variation