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navik [9.2K]
3 years ago
11

The head of a human offspring turns down and prepares to enter the birth canal during

Biology
1 answer:
Black_prince [1.1K]3 years ago
4 0
During the third trimester
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Embryology is a discipline that studies the structural/anatomical features and development of embryos. Embryos are a fundamental piece of evidence to support common ancestry among vertebrates because there are homologous structural features that can only be observed during the first stages of vertebrate development. For example, all vertebrate embryos (e.g., fish, chicken and human embryos), develop tails and gill slits during their first stages of embryo development. In consequence, embryology provides evidence for evolution of vertebrates.

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