Question

'Ontogeny recapitulates phylogeny'. This is the

• A. Pauling law
• B. Hardy-Weinberg law
• C. Biogenetic law
• D. Thomas law

Answer 1

The correct option is C Biogenetic law

Biogenetic law, also called as 'Recapitulation Theory', postulated by Ernst Haeckel in 1866, that ontogeny recapitulates phylogeny, i.e., the development of the animal embryo and young, traces the evolutionary development of the species. The theory was influential and much-popularized earlier but has been of little significance in elucidating either evolution or embryonic growth. Thus, option C is correct.
Pauling's rules are five rules published by Linus Pauling in 1929, for predicting and rationalizing the crystal structures of ionic crystals. It is not related to 'Ontogeny recapitulates phylogeny'. Thus, option A is wrong.
The Hardy-Weinberg principle states that allele and genotype frequencies in a population will remain constant from generation to generation in the absence of other evolutionary influences. It is not related to 'Ontogeny recapitulates phylogeny'. Thus, option B is wrong.
Thomas law is not related to 'Ontogeny recapitulates phylogeny'. Thus, option D is wrong.
Thus, the correct answer is option C.