After copulation, the male and female haploid gametes
must join in the process of fertilization
in order for a new diploid zygote
to be made.
Factors affecting the male and female gametes coming into contact:
- The female reproductive tract is acidic and will kill sperm if they remain in the female reproductive tract for more than 1-2 days
- The mature egg cell releases allurin to attract the sperm into the correct oviduct
- Fertilization must occur in a small window of time (2-3 days) in the female reproductive cycle in order for implantation to be successful
If the sperm
reaches the ovum
at the appropriate time, the sperm
still has several barriers to overcome before it can fertilize the ovum
Within one hour after fertilization
nuclei fuse to create the new diploid zygote
Figure 10.6 - Layers of the female ovum.