Sexual reproduction brings about

Options

A. Polyploidy
B. Aneuploidy
C. Euploidy
D. Genetic recombination

Answer

**Step-by-Step Solution:**

1. **Understanding Sexual Reproduction**: Sexual reproduction involves the fusion of gametes (sperm and egg) from two parents, leading to genetic variation in the offspring.

2. **Analyzing the Options**:
- **Polyploidy**: This refers to a condition where an organism has more than two complete sets of chromosomes. It is not a direct result of sexual reproduction.
- **Aneuploidy**: This is the presence of an abnormal number of chromosomes in a cell, which can occur due to errors in cell division but is not a direct outcome of sexual reproduction.
- **Euploidy**: This involves variations in the complete set of chromosomes, but again, it does not specifically relate to the genetic outcomes of sexual reproduction.
- **Genetic Recombination**: This is the process where genetic material is exchanged between gametes during fertilization, leading to new combinations of genes in the offspring.

3. **Identifying the Correct Answer**: Among the options, genetic recombination is the process that is directly associated with sexual reproduction, as it introduces genetic diversity in the offspring through the mixing of parental genes.

4. **Conclusion**: Therefore, the correct answer to the question "Sexual reproduction brings about" is **genetic recombination**.

---