According to the animation, which of the following makes mRNA from the information stored in a DNA template?
a. DNA polymerase
b. tRNA
c. Ribosomes
d. RNA polymerase
Answer: d. RNA polymerase
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Which of the following events increases variability in a population?
a. genetic drift b. bottleneck c. stabilizing selection d. gene flow
Chromatids
What will be an ideal response?
You have conducted an Ames test on a given compound. Which of the following would be classified as a positive result on the Ames test?
A) his – strain grows on an his – plate. B) his – strain grows on an his+ plate. C) his+ strain grows on an his – plate. D) his+ strain grows on an his+ plate. E) his+ strain grows on either an his – or an his+ plate.
In open-water systems such as lakes and oceans, decomposition occurs mostly in the surface layer
Indicate whether the statement is true or false