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(A) Hugo de Vries proposed the mutation theory,which states that evolution occurs through large,sudden,and random mutations.Hardy-Weinberg principle s

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Hugo de Vries: Mutation theory; Hardy-Weinberg: Allele frequency stability; Ernst Haeckel: Recapitulation theory.

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(A) Hugo de Vries proposed the mutation theory,which states that evolution occurs through large,sudden,and random mutations.Hardy-Weinberg principle states that allele frequencies in a population remain constant from generation to generation in the absence of evolutionary forces.Ernst Haeckel proposed the recapitulation theory (biogenetic law),which states that 'ontogeny repeats phylogeny',meaning an organism's development stages reflect its evolutionary history.

List-$I$	List-$II$
$(i)$ $65$ million years ago	$(p)$ Sea weeds existed
$(ii)$ $350$ million years ago	$(q)$ Invertebrates formed
$(iii)$ $500$ million years ago	$(r)$ Jawless fish evolved
$(iv)$ $320$ million years ago	$(s)$ Dinosaurs disappeared

Match the scientists with their respective contributions: Hugo de Vries,Hardy-Weinberg,and Ernst Haeckel.

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