Question
Biology Question on evolution
Haeckel's biogenetic law is
A
ontogeny repeats phylogeny
B
phylogeny repeats ontogeny
C
reproductive isolation
D
every organism is produced by its parents.
Answer
ontogeny repeats phylogeny
Explanation
Solution
Haeckel's biogenetic law is ontogeny recapitulates phylogeny. Ontogeny is the life history of the individual starting from ovum and phylogeny is the sequence of adult ancestors which must have incurred in the evolution of the group of this individual. It means an individual during its development repeats the most important changes which its ancestors have undergone during the long and slow course of their evolution.