Is inheritance of acquired traits included in the modern theory of evolution?

No, the inheritance of acquired traits is not included in the modern theory of evolution, which is primarily based on natural selection and genetic variation. This concept, originally proposed by Lamarck, suggests that traits acquired during an organism's lifetime can be passed on to the next generation. However, modern evolutionary Biology, grounded in genetics, emphasizes that only heritable traits encoded in DNA can be passed on, and acquired traits do not alter the genetic material.