When does life begin?

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When does life begin? (biological question)

  • At the moment of "implantation"

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  • At "fertilization"

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  • #26
Evo
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I understand the classification categories refer to common ancestors (and traits) we have with other animals - Kingdom: Animalia, Phylum: Chordata, Class: Mammalia, Order: Primates, Family: Hominidae, Subfamily: Homininae, Tribe: Hominini, Genus: Homo Species: H. sapiens. There's yet more subdivisions, eg sub-phylum Vertebrata. The"missing link" that I was talking about can be asked something like "Can animal organs be transplanted into humans 100% successfully?" Look up Hyperacute Rejection, Acute Vascular Rejection, Cellular Rejection, etc
This has nothing to do with the topic, which has been answered.
 

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