Which cell process occurs only in organisms that reproduce sexually?

The process that occurs only in organisms that reproduce sexually is called Meiosis.

Here are the steps of Meiosis:

1. Interphase: The DNA in the cell is copied resulting in two identical full sets of chromosomes.

2. Prophase I: The chromosomes condense and pair up. The nuclear envelope breaks down. Crossing-over occurs.

3. Metaphase I: Pairs of homologous chromosomes move to the equator of the cell.

4. Anaphase I: Chromosome pairs separate and move toward opposite poles.

5. Telophase I and Cytokinesis: Chromosomes gather at the poles of the cells. the cytoplasm divides.

6. Prophase II: A new spindle forms around the chromosomes.

7. Metaphase II: Chromosomes line up at the equator.

8. Anaphase II: Centromeres divide. Chromatids move to the opposite poles of the cells.

9. Telophase II and Cytokinesis: A nuclear envelope forms around each set of chromosomes. the cytoplasm divides.

The result of meiosis is four daughter cells, each with half the number of chromosomes as the parent cell. These cells are genetically different from each other and from the parent cell. They are the gametes (sperm or egg cells) that are used in sexual reproduction.