Final answer:
The correct order of the steps in fertilization is: sperm nuclear envelope breaks down, decondensation occurs, sperm head penetrates egg cytoplasm, and genomes blend to form a diploid cell.
Step-by-step explanation:
Fertilization is the process by which male and female reproductive cells (sperm and egg) fuse to form a zygote. In humans, fertilization typically occurs in the fallopian tubes. The resulting zygote undergoes cell divisions, forming an embryo that develops into a new organism through the process of embryogenesis. The correct order of the steps in fertilization is as follows:
- Sperm nuclear envelope breaks down
- Decondensation occurs
- Sperm head penetrates egg cytoplasm
- Genomes blend to form a diploid cell