Of the following, which is likely the most direct ancestor of modern humans?
a. Homo habilis
b. Australopithecus garhi
c. Homo erectus
d. Australopithecus afarensis
e. Homo neanderthalis
C; Homo erectus gave rise to modern humans and Neanderthals. Neanderthals (choice e) were a side branch that did not give rise to any current modern forms. The other choices are forms that appeared prior to H. erectus.
You might also like to view...
Ocean acidification decreases the precipitation of calcium carbonate and thus will probably affect the cycling of Ca and other nutrients in the ocean
Indicate whether the statement is true or false.
With regard to DNA packaging, prokaryotic chromosomes
A) are devoid of histone or histone-like proteins. B) are, in general, positively supercoiled. C) have no higher-level structure, such as looped domains. D) use RNA to contribute to chromosomal packaging. E) none of the above
A region where old oceanic crust is being destroyed is called:
a. a spreading center. b. a midocean ridge. c. a seamount. d. a subduction zone. e. an atoll.
You are working in an aquarium that has been breeding an endangered species of fish for return into the wild. You have a batch of progeny from the first generation of breeding. The staff are discussing whether to return those fish to an area that has been completely depleted, or add them to a partially depleted population. “Considering the Allee effect, what do you say?
You are working in an aquarium that has been breeding an endangered species of fish for return into the wild. You have a batch of progeny from the first generation of breeding. The staff are discussing whether to return those fish to an area that has been completely depleted, or add them to a partially depleted population. “Considering the Allee effect, what do you say? 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 Allee effect? What other information is related to the question? Choose Answer: Given what you now know, what information is most likely to produce the correct answer? Reflection 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?