Which of the following would demonstrate a point mutation to the following DNA sequence: CAT GAT ATC?
A. GUACUAUAG
B. AUGCUAUAG
C. CATCATATC
D. GUAAUCAUG
C. CATCATATC
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Heavy metals are effective antimicrobial agents but are not widely used because of their high toxicity to humans.
Answer the following statement true (T) or false (F)
The pair of traits that best illustrates convergent evolution is
A. an elephant's tusks and a beaver's teeth. B. a lizard's arm and a bird's wing. C. a dragonfly's wing and a butterfly's wing. D. a cartilage skeleton in a shark and a bone skeleton in a dolphin. 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 convergent evolution? 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? 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 occurrence of geographic isolation between two populations will ultimately lead to:
a. sexual dimorphism. b. allopatric speciation. c. morphological similarity. d. sympatric speciation. e. sexual selection.
A cellular structure found in plant but not animal cells is the:a
chloroplast. b. ribosome. c. endoplasmic reticulum. d. microtubule. e. microfilament.