A response to change in the internal/external environment that adds to the change is called
a. positive feedback.
b. physiological feedback.
c. reflex feedback.
d. negative feedback.
e. anatomical feedback.
A
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If DNA directs the production of RNA, what does RNA make?
A. RNA makes proteins. B. RNA makes more DNA. C. RNA makes more RNA. D. RNA makes membranes.
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?
A cell type that helps to pull water through the
sponge and strains out food particles is indicated by a. A. b. B. c. C. d. D. e. E.
A carrier for a genetic disorder ____
a. is homozygous recessive b. shows the recessive phenotype c. shows no symptoms d. is homozygous dominant e. is always male