The formation of the bivalent during meiosis
A. is required for the pairing of homologous chromosomes.
B. contributes to the genetic diversity of a species.
C. ensures that the resulting haploid cells will have the same combination of homologous chromosomes as the original diploid cell.
D. aids the alignment of sister chromatids in a single row along the metaphase plate.
E. occurs during meiosis II.
B. contributes to the genetic diversity of a species.
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Which statement is true of all protists?
a. They exhibit true multicellularity. b. They are encased in silica-based shells. c. They contain complex organelles and nuclei. d. They live in large colonies of identical protists.
Currently, much commercial lumber and wood products come from which biome?
a. tundra b. temperate rain forest c. savanna d. tropical rain forest e. temperate deciduous forest
Filaments of DNA and protein
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