Introduction to Natural Selection

AP Biology· difficulty 2/5

Lamarck's "inheritance of acquired characteristics" is rejected today because

  • A

    Acquired traits during an organism's lifetime are not encoded in its germline DNA, so cannot be inherited

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  • B

    Acquired traits during an organism's lifetime alter only somatic cells, so cannot influence the offspring's phenotype

  • C

    Acquired traits during an organism's lifetime are encoded in mitochondrial DNA, but not transmitted maternally

  • D

    Acquired traits during an organism's lifetime affect only protein folding, so cannot persist beyond a single generation

Explanation

Modern biology: heritable changes must alter germline DNA. Most somatic changes are not inherited (with some epigenetic exceptions).

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