Place the following meiotic events in order. a. __ lining-up of tetrads at the equatorial plate b. __ complete de -condensation C. __ crossing-over d. __ DNA replication e. __ dyad formation f. __ interphase g. __ migration of chromatids h. __ migration of homologous pairs i. __ partial de -condensation j. __ separation of homologous chromatids k. __ tetrad formation

Here's the correct order of meiotic events:<br /><br />1. **f. Interphase:** This occurs *before* meiosis begins. DNA replication happens during the S phase of interphase.<br />2. **d. DNA replication:** Chromosomes duplicate, creating sister chromatids.<br />3. **k. Tetrad formation:** Homologous chromosomes (each consisting of two sister chromatids) pair up.<br />4. **c. Crossing-over:** Non-sister chromatids within a tetrad exchange genetic material.<br />5. **a. Lining-up of tetrads at the equatorial plate:** Tetrads align in the center of the cell during Metaphase I.<br />6. **h. Migration of homologous pairs:** Homologous chromosomes separate and move to opposite poles of the cell during Anaphase I.<br />7. **e. Dyad formation:** Each pole now has a haploid set of chromosomes (still consisting of two sister chromatids). This marks the end of Meiosis I.<br />8. **i. Partial de-condensation:** Chromosomes may slightly decondense between Meiosis I and II, but not fully.<br />9. **Lining-up of dyads at the equatorial plate (not listed, but important):** Chromosomes line up at the equator during Metaphase II.<br />10. **j. Separation of homologous chromatids:** Sister chromatids separate and move to opposite poles during Anaphase II.<br />11. **g. Migration of chromatids:** This is essentially the same as the previous step; chromatids (now considered individual chromosomes) have migrated to opposite poles.<br />12. **b. Complete de-condensation:** Chromosomes decondense, returning to their interphase form. This occurs after the completion of Meiosis II, as the newly formed cells enter interphase.<br /><br /><br />Therefore, the ordered list using the given letters is: f, d, k, c, a, h, e, i, j, g, b.<br />