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 I and meiosis II.
B. contributes to the genetic diversity of a species.
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The gut cavity may be a fully lined coelom or a
partially lined __________. Fill in the blank(s) with the appropriate word(s).
Glomerulonephritis will lead to
a. kidney stones. b. bladder infections. c. kidney cysts. d. inflammation of the urethra. e. little or no filtering of the blood
Which of the following regulates genes by binding directly to transcription factor proteins?
a. Growth hormone b. Insulin c. Steroid hormones d. Epinephrine
The order of events in the cell cycle is
A) S to G1 to G2 to mitosis. B) Mitosis to G1 to G2 to S. C) G1 to G2 to S to mitosis. D) G1 to S to G2 to mitosis.