If the Hardy-Weinberg equilibrium is met, what is the net effect?
A. evolution leading to a population better adapted to a changing environment
B. very slow and continuous evolution with no increased adaptation
C. no evolution because the alleles in the population remain the same
D. evolution leading to a population better adapted to an unchanging environment
Answer: C
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If a blood clot blocks the flow of blood to some part of the brain, a person will suffer
1.myocardial infarction. 2.cerebral aneurysm. 3.cerebral palsy. 4.stroke. 5.cerebral varicosity.
Creatine phosphate (marketed as "creatine") is a popular supplement taken by weightlifters and other athletes. What might the phosphates in this supplement be expected to do?
A) They readily allow for the regeneration of ATP. B) They break down glucose during the citric acid cycle. C) They accept electrons at the end of the electron transport chain. D) They ensure ATP is never broken down into ADP.
What is the purpose of a test-cross?
a. A test-cross can demonstrate the efficiency of breeding. b. A test-cross can reveal an unknown internal phenotype. c. A test-cross can reveal an unknown genotype. d. A test-cross is just another term for an experimental cross between two unknown organisms. e. A test-cross allows a breeder to see how quickly it takes to go from generation to generation for a particular organism.
You label cells with a radioactive isotope of sulfur (35S). The only molecules that would be radioactively labeled in these cells are
A. proteins B. nucleic acids C. lipids D. carbohydrates