Passage VI

In the yeast Saccharomyces cerevisiae, the function of meiosis is to divide a diploid cell into 4 haploid cells called spores. During meiosis, the 2 copies of a chromosome, or homologs, undergo DNA replication (when each homolog becomes a linked pair of sister chromatids) followed by 2 rounds of chromosome segregation (separation into different cells) called Meiosis I and Meiosis II. The figure shows the homologs of a particular chromosome during meiosis in a wild-type S. cerevisiae strain and also in 2 mutant S. cerevisiae strains (Mutant A and Mutant B) each having a different mutation that affects meiosis.

39. The depiction of meiosis in the figure for which of the three S. cerevisiae strains, if any, is consistent with the statement "DNA replication occurs between Meiosis I and Meiosis II" ?

Answer and Explanation

Your Answer is

Correct Answer is D

Explanation

It can be seen from the figure in the text that whether it is for wild-type strain, or for Mutant A or Mutant B strain, DNA replication occurs before Meiosis I, so the statement in the question stem is different from any None of the conditions match