Explain fertilization process from cellular level to fetus

Explain the following concepts:
Asexual - sexual reproduction.
Mitosis – Meiosis
Diploid - Haploid
Gametes
Fertilization
Zygote
Syngamy
Blastocyst
Implantation
Gastrulation
Embryo - Fetus
Explain fertilization process from cellular level to fetus (as per video time 1:08:00)
After learning about fertilization process, and according to nature and objectively, and scientifically speaking, when does human life begin? Why?
Read and summarize Ethical and Religious Directives for Catholic Health Care Services (ERD) PART FOUR Introduction.
https://www.usccb.org/resources/ethical-religious-directives-catholic-health-service-sixth-edition-2016-06_0.pdfLinks to an external site.

Submission Instructions:

The post is to be clear and concise and students will lose points for improper grammar, punctuation, and misspelling.
If references are used, please cite properly according to the current APA style. Articles must be from the last 5 years.
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