Analysis of neutral mutation rates to answer interesting questions such as "When did humans begin to wear clothes?" relies on the ________ [two words] hypothesis, which states that molecular traits change at a steady rate
Fill in the blank(s) with correct word
molecular clocks
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The main role of myoglobin in muscle fibers is to
a. magnify responses to neurotransmitters. b. sequester ions. c. synthesize ATP. d. store oxygen. e. enhance the strength of the power stroke.
Why are mosses and liverworts limited in size?
a. They lack gametes. b. They lack vascular tissues. c. They lack a reproductive cycle. d. They lack roots to absorb nutrition. e. They lack chloroplasts for photosynthesis.
Biotechnology involves the
a. use of microorganisms to make desired products. b. use of animal cells to make vaccines. c. development of disease-resistant crop plants. d. use of microorganisms to make desired products and the use of animal cells to make vaccines. e. use of microorganisms to make desired products, the use of animal cells to make vaccines, and the development of disease-resistanct crop plants.
The ____________________ connective tissue of the lungs is important for normal exhalation
Fill in the blank(s) with the appropriate word(s).