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Question: 5 premendelian theories of genetics can broadly be classified as...

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5. Pre-Mendelian theories of genetics can broadly be classified as being either ‘preformationist’ or ‘epigenetic.’ Preformationist theories of inheritance hold that all of the parts of an adult organism are present in the egg and merely grow to a larger size during embryogenesis. In contrast, epigenetic theories of inheritance hold that embryos develop de novo from genetic material synthesized from one or both parent(s). Which of the following statements best characterize the conceptual relationships of these pre-Mendelian theories with evolutionary theories.

a] Preformationism conflicts with evolutionary theories because embryonic development is pre- determined, thus inhibiting patterns of descent with modification.

b] Although Preformationism is consistent with the Darwinian theory of evolution, it conflicts with the Lamarckian theory evolution because it would inhibit the inheritance of acquired characteristics.

c] Epigenetic theories of inheritance conflict with evolutionary theories because genetic information contributed by the parents are diluted every generation, which would then inhibit patterns of descent with modification.

d] Although Epigenesis is consistent with the Darwinian theory of evolution, it conflicts with the Lamarckian theory of evolution because it would inhibit the inheritance of acquired characteristics.

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