Match the columns:

Column-$I$	Column-$II$
$(1)$ Human embryos have gill	$(a)$ Chemical evolution
$(2)$ Oparin and Haldane	$(b)$ Simulation experiment
$(3)$ Miller and Urey	$(c)$ Wings of bird and butterfly
$(4)$ Analogous organ	$(d)$ Ontogeny repeats phylogeny

(A) The correct matches are as follows:
- $(1)$ Human embryos have gill slits,which is a concept related to Ernst Haeckel's theory that 'Ontogeny repeats phylogeny' $(1-d)$.
- $(2)$ Oparin and Haldane proposed the theory of 'Chemical evolution' $(2-a)$.
- $(3)$ Miller and Urey conducted a 'Simulation experiment' to test the Oparin-Haldane hypothesis $(3-b)$.
- $(4)$ 'Analogous organs' are structures that perform similar functions but have different evolutionary origins,such as the wings of a bird and a butterfly $(4-c)$.
Therefore,the correct sequence is $(1-d), (2-a), (3-b), (4-c)$.