________ is the process in which a single diploid cell divides to produce haploid reproductive cells
Fill in the blank(s) with correct word
Meiosis
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Lizards that eat flies they catch on the ground and birds that catch and eat flies in the air are engaged in _____ competition
a. exploitative d. interspecific b. interference e. both exploitative and interspecific c. intraspecific f. both interference and intraspecific
A(n) ________ is an organism that lives on or within another without killing the host
Fill in the blank(s) with correct word
Which of the following occurs during metaphase of mitosis?
a. Centrioles migrate to opposite poles of the cell. b. Chromatin condenses into chromosomes. c. The nuclear envelope disappears. d. Chromosomes decondense into chromatin.
Zircon crystals that form in molten magma are
easily dated because they contain
a. no lead. b. no uranium. c. uranium but no lead. d. lead but no uranium. e. both lead and uranium.