The decline of the eugenics movement in the U.S. in the early 20th century resulted from ____
a. breakthroughs in genetic technology
b. violent protests by the medical community
c. the ability to manipulate gene expression
d. social outrage at the number of deaths caused by botched sterilizations
e. its misuse for social and political purposes by the Nazis
e
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Which statement most accurately describes the evolutionary relationships among the three domains?
A. Bacteria and Archaea diverged from a common ancestor more recently than they diverged from their common ancestor with Eukarya. B. Bacteria and Eukarya diverged from a common ancestor more recently than they diverged from their common ancestor with Archaea. C. Eukarya and Archaea diverged from a common ancestor more recently than they diverged from their common ancestor with Bacteria. D. All three domains diverged from a common ancestor at the same time.
If an adult human suffered a traumatic injury, could their notochord be damaged?
A. Yes; because the notochord is deep within the body only a severe injury could damage it. B. No; the notochord is encased in bone and it not susceptible to damage. C. Yes; damage to the notochord often results in paralysis. D. No; adult humans do not have a notochord. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about the notochord? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
The respiratory surfaces of mammalian lungs are called
a. alveoli. b. bronchi. c. tracheae. d. bronchioles. e. air sacs.
In the study involving periwinkle snails and their algal food sources, which conclusion can be drawn?
a. Periwinkles eliminated all algae and died out. b. Periwinkles eliminated all of the less dominant algae species. c. Periwinkles eliminated the dominant algae entirely. d. Periwinkles had no effect on the algae populations. e. Periwinkles can increase or decrease species richness depending on which algal species it is consuming.