Examlex
The study of astronomy involves
Zygote
The initial cell formed when a sperm cell fertilizes an egg cell, representing the earliest stage of embryonic development.
Prenatal Development
The process of growth and development within the womb from conception to birth.
Germinal
Relating to the earliest stage of development of an organism, particularly the period from fertilization to implantation in pregnancy.
Embryonic
Pertaining to the earliest stage of development in living organisms after fertilization, before the stage known as fetal development.
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