the.com/embryology
the study of how a single cell argues its way into becoming a whole person
means the branch of biology concerned with the formation, early growth, and development of embryos before birth or hatching
from From Greek 'embryon,' the young one still inside — built from 'en-' (in) and 'bryein' (to swell, to grow full) — joined to '-logy,' the study of, from 'logos,' word or reason. So at root it means 'the study of the swelling-within': a name for watching life balloon out of almost nothing.
- shared origin
- all embryos start with one fertilized cell
- gill echoes
- human embryos briefly develop fish-like pharyngeal arches
- left or right
- a single gene decides which side holds your heart
- tail era
- embryos grow a tail, then reabsorb it
- ancient roots
- Aristotle dissected chick eggs to track development
spemann's organizer — hans spemann's 1924 discovery of the dorsal lip of the blastopore that induces embryonic development in amphibians
fate mapping of drosophila — christiane nüsslein-volhard and eric wieschaus's 1980 identification of gap genes that pattern fruit fly embryos