What can explain the phenomenon where the same genotype might give rise to different phenotypes?
A) pleiotropy
B) codominance
C) incomplete dominance
D) complete dominance
E) penetrance and expressivity
E) penetrance and expressivity
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A sudden or total lack of oxygen can cause unconsciousness in 5–10 seconds. Why?
a. The brain has very high energy requirements and lack of oxygen reduces available energy. b. Oxygen is required for ventilation and lack of ventilation causes fainting. c. Lack of oxygen causes an increase in carbon dioxide, which is toxic. d. The brain needs oxygen to breathe, and when oxygen is not available, it signals the nervous system to cause fainting.
Which of the following concepts best describes the wide variety of dog species we observe, ranging from the domesticated golden retriever or the basset hound, to the wild dogs of Africa, to foxes?
a. evolution b. taxonomy c. special creation d. preadaptation e. inheritance of acquired characteristics
Thermohaline Circulation
What will be an ideal response?
Explain the difference between a theory and a hypothesis, and give an example of each
What will be an ideal response?