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[citation needed] In the college text book Psychology and Life, Floyd L. Ruch wrote: "At the moment of conception, two living germ cells (sperm and egg) unite to produce an individual". [19] James C. G. Conniff wrote: "At that moment conception takes place and, scientists generally agree, a new life begins—silent, secret, unknown". [20]
The viewpoint that pregnancy, or at least morally significant human life, begins at the exact moment that sperm and egg interact is highly controversial, although it is commonly held by groups such as the Roman Catholic Church and many traditionally religious individuals, and other alternate viewpoints are put forth.
There are three stages of fetal development. The first stage is the germinal stage begins at conception and is the shortest stage. The second stage is the embryonic stage which begins around the third week of pregnancy and ends at the eighth week. The final stage is the fetal stage which begins at the ninth week of pregnancy and lasts until birth.
God has revealed to us in His Word that human life begins at conception. David speaks extensively about this in Psalm 139: We were fearfully and wonderfully made. We were knit together in our ...
Science can observe these various phases of fetal development but cannot determine when human life begins. UrsaHoogle/E+ via Getty ImagesNow that the U.S. Supreme Court has given states final say ...
A key point in debates about abortion restrictions is this question over when, legally-speaking, life begins. Many prominent anti-abortion voices have asserted life begins at conception, and ...
Aristotelian Soul. Among Greek scholars, Hippocrates (c.460 – c.370 BC) believed that the embryo was the product of male semen and a female factor. But Aristotle (384 – 322 BC) held that only male semen gave rise to an embryo, while the female only provided a place for the embryo to develop, [4] (a concept he acquired from the preformationist Pythagoras).
The process begins with fertilization, where an egg released from the ovary of a female is penetrated by a sperm cell from a male. The resulting zygote develops through mitosis and cell differentiation , and the resulting embryo then implants in the uterus , where the embryo continues development through a fetal stage until birth .