recapitulation theory

biological hypothesis

en-US/ˌɹikəˌpɪt͡ʃəˈleɪʃən ˌθiəˌɹi/
en-GB/ˌɹiːkəˌpɪt͡ʃʊˈleɪʃn θɪəɹiː/

الفئات:

pattern in nature