Abortion – a science response – embryology – when human?

Pro-abortion argument:

But make no mistake, the ultimate question is, when does a fetus become a person—at fertilization, at birth, or somewhere in between?

Here, modern science offers no clarity. If anything, the past century of scientific advances have only made the answer more complicated. As scientists have peered into wombs with ultrasound and looked directly at sperm entering an egg, they’ve found that all the bright lines they thought existed dissolving.

Pro-Science argument:

The ultimate question is, when does a fetus become a human.  

Indeed, when American physicians began collecting humans embryos and charting embryonic development in the late 19th and early 20th centuries, they began considering fertilization as the beginning of fetal life.

Answer – the fetus is human when it becomes fertilized.


  1. 1.
    a human being regarded as an individual.
    “the porter was the last person to see her”
    synonyms: human beingindividual, man/woman, childhumanbeing, (living) soul, mortalcreatureMore
  1. 1.
    relating to or characteristic of people or human beings.
    “the human body”
    synonyms: anthropomorphicanthropoidhumanoidhominid

    “in human form”
  1. 1.
    a human being, especially a person as distinguished from an animal or (in science fiction) an alien.
    synonyms: personhuman beingpersonagemortal, member of the human race; More






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