Which of the following provides the best evidence that modern humans are evolving?
A. In humans of northern European descent, blue-eyed individuals are at greater risk of vitamin D deficiency than brown-eyed individuals.
B. Adult humans of American descent eat fruits and vegetables grown all over the world.
C. Adult humans of northern European descent can readily digest lactose.
D. Modern humans have opposable thumbs.
Answer: C
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Recall the experiment on ant navigation. To run a controlled experiment, what parameters were held constant for the test group of 75 ants?
A) stride number B) leg length C) stride number, leg length, and environmental temperature D) all variables except leg length
Members of the genus Micrococcus are usually ________.
A. microaerophilic B. facultatively anaerobic C. aerobic D. anaerobic
In plants, ________ induces elimination of duplicated genes.
Fill in the blank(s) with the appropriate word(s).
LC. asks, "Why don't they give me a dopamine pill? Wouldn't that just fix everything?" Why is oral dopamine not a replacement therapy?
What will be an ideal response?