1. When DNA is heated, the hydrogen bonds break and allow the two strands of DNA to separate from one another. Which sequence of DNA would be most resistant to heating, and therefore, stay double stranded longer? (A)AATTGGCC (B)ATGCATTC (C) AGGAGCTC (D) TGGCTTAG (E) TACCAATT

8. Which statement describes a difference between meiosis I and meiosis II? (A)DNA is replicated during meiosis II but not during meiosis I. (B)Homologous chromosomes separate during meiosis I； sister chromatids separate during meiosis II. (C)Meiosis I produces diploid cells； meiosis II produces haploid cells. (D) Chromosomes align along the equatorial plane of the cell in meiosis I but not in meiosis II. (E) Crossing-over occurs during meiosis II but not during meiosis I.

1. When DNA is heated, the hydrogen bonds break and allow the two strands of DNA to separate from one another. Which sequence of DNA would be most resistant to heating, and therefore, stay double stranded longer?
(A)AATTGGCC
(B)ATGCATTC
(C) AGGAGCTC
(D) TGGCTTAG
(E) TACCAATT

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