2006-12-03 19:52:50 · 6 answers · asked by sriramna 1 in Science & Mathematics ➔ Biology
Ernst Haekel propsed this theory he said that in the embryonic period of a progeny it undergoes all the stages of the theory of evolution....... from a single cell to the most complexed mammals.....
2006-12-03 20:55:26 · answer #1 · answered by Anonymous · 0⤊ 0⤋
The theory that a fetus undergoes the same changes during embryonic development that the species underwent during the course of evolution. For example, many species apparently seem to go through a gill phase during embryonic development, or look very similar to one another - e.g. pig and human embryo. By the way, this statement has been proven false, which is a very important point in biology.
2006-12-04 06:29:51 · answer #2 · answered by Niotulove 6 · 0⤊ 0⤋
The theory that a fetus undergoes the same changes (ontogany) during maturation that the species underwent (phylogeny) during its evolution.
Doug
2006-12-04 03:58:34 · answer #3 · answered by doug_donaghue 7 · 0⤊ 0⤋
Let's see... first I'll need definitions:
Ontogany- Not found (alternative?)
Ontogeny–noun Biology.
the development or developmental history of an individual organism.
Recapitulate-verb Biology. (of an organism) to repeat (ancestral evolutionary stages) in its development.
Phylogeny–noun. The development or evolution of a particular group of organisms.
Soooo... putting them together, I'd say in short this phrase means:
The history of an organism repeats it's own evolution. Or in other words, history repeats itself. Eh???
2006-12-04 04:01:06 · answer #4 · answered by Kory 4 · 0⤊ 0⤋
Huh ? ontagorecaputaphylo whatty ?
2006-12-04 04:05:22 · answer #5 · answered by sandwreckoner 4 · 0⤊ 1⤋
http://en.wikipedia.org/wiki/Ontogeny_recapitulates_phylogeny
2006-12-04 03:56:10 · answer #6 · answered by Greg Y 1 · 0⤊ 0⤋