In meiosis, paired homologous chromosomes align down the center of the cell during

A. metaphase I.
B. metaphase II.
C. prophase I.
D. anaphase II.
E. prophase II.


A. metaphase I.

Biology & Microbiology

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a. birds b. beetles and flies c. bees and bumblebees d. wasps e. bugs and butterflies

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Lichens are

a. parasitic interactions between a fungus and an alga. b. only found growing on living matter. c. symbiotic associations between a fungus and an alga. d. capable of causing some obscure diseases. e. insensitive to changes in the environment.

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Which of the following is NOT a requirement of natural selection?

A) differential reproductive success B) overproduction of offspring C) genetic variation D) gene flow

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Which of the following colors contributes the least energy to photosynthesis?

A) blue B) red C) orange D) green

Biology & Microbiology