What is the term given to the theory that put forth the idea that living organisms could arise by incubating nonliving components?
A) spontaneous generation
B) collective combination
C) preformation
D) evolution
E) natural selection
Answer: A
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The majority of Drosophila embryo segments will become part of the ________ in an adult fly.
A. abdomen B. thorax C. head D. head or thorax E. bithorax complex
Which nucleotide sequence is complementary to the DNA sequence 5'-GACGTT-3'?
a. 5'-TCATGG-3' b. 3'-TCATGG-5' c. 3'-CTGCAA-5' d. 3'-AGTACC-5' e. 5'-TTGCAG-3'
Pea fowl (peacocks and peahens) show sexual dimorphism -- males have long blue-green tail feathers with eyespots, while females have short brown tail feathers. Which statement best describes the graphed data about peacocks?
A. There are no peacocks with less than 140 eyespots.
B. The fewer eyespots that a peacock has in his tail, the more mates he attracts.
C. Actually eyespots have very little to do with mate-attracting activities.
D. The more eyespots that a peacock has in his tail, the more mates he attracts.
E. There are no peacocks with more than 165 eyespots.
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 sexual selection? 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?
Which characteristic is unlikely to be associated with the profundal zone?
a. the deeper part of the lake b. the area where light does not penetrate c. contains consumers d. contains primary producers e. contains cooler water than the other zones