Mutations are the only source of genetic variation in a population
Indicate whether the statement is true or false
FALSE
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Which event of fertilization occurs first?
A. fast block to polyspermy B. the entry of sperm DNA into the egg C. the slow block to polyspermy D. the acrosomal reaction E. the cortical reaction
The circulatory system below would be representative of a circulatory system found in a ____
a. frog b. pig
c. bird d. grasshopper e. pig and a bird
In the cycling of energy and carbon through living things, plants and some other organisms use CO2 to make carbon-containing molecules, while other organisms break down those molecules and release CO2. During this process, CO2 is produced during ________
and used during ________. A) cellular respiration; photosynthesis and cellular respiration B) photosynthesis; cellular respiration C) cellular respiration; photosynthesis D) cellular respiration; cellular respiration E) photosynthesis; photosynthesis
Transcription takes place in 3 steps: initiation elongation and ____
Fill in the blank(s) with the appropriate word(s).