A scientist studying evolution of peppered moths (Biston betularia) in Michigan observed that the percentage of melanic moths increased by around 2% from 1960-1961. Has evolution occurred in this population?
A. No, because melanism wasn't adaptive at that time.
B. No, because the frequency of the melanic moths did not change enough to be considered evolution.
C. Yes, because the frequency of the melanic moths in the population changed over time.
D. Yes, because the frequency of melanic moths decreased.
C. Yes, because the frequency of the melanic moths in the population changed over time.
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White blood cells seen engulfing large numbers of
bacterial cells are most likely a. neutrophils. b. macrophages. c. mast cells. d. eosinophils. e. lymphocytes.
Which of the following is not true about the autoclave?
A) Can be used to kill most bacteria B) Can be used with glassware and metal instruments C) Inactivates most viruses D) Can be used with heat-labile materials E) Can be used to kill most endospores
An example of an atom or molecule that directly breaks down O3 is CFC. Indicate whether the statement is true or false
The proximal convoluted tubule
A. reabsorbs most of the valuable materials that leave the glomerulus and enters the nephron. B. secretes ions into the nephron. C. simply conducts fluid to the loop of Henle. D. reabsorbs fats and proteins.