
Many years ago, some researchers reported that they could transfer learning from one animal (a flatworm) to another by feeding trained animals to untrained animals. Further, they claimed that RNA was the active molecule of learning. Given your knowledge of the roles of RNA and protein in cells, do you think that a specific memory (for example, remembering the base sequences of codons of the genetic code) could be encoded by a specific molecule of RNA and that this RNA molecule could transfer that memory to another person? In other words, in the future, could you learn biology by popping an RNA pill? If so, how would this work? If not, can you propose a reasonable hypothesis for the results with

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Chapter 13 Solutions
Biology: Life on Earth (11th Edition)
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- Select all of the following that changes in the MC1R gene can lead to: Changes in spots/stripes in lizards, changes in coat coloration in mice, ectopic ear formation in Siberian hamsters, and red hair in humansarrow_forwardPleiotropic genes are genes that (blank) Cause a swapping of organs/structures, are the result of duplicated sets of chromosomes, never produce protein products, and have more than one purpose/functionarrow_forwardA loss of function mutation in Pitx1 enhancers can cause (blank) Removal of Pitx1 exons and growth of ectopic hindlimbs, growth of extra ectopic forelimbs, loss of forelimb specification and development, and loss of hindlimb specification and developmentarrow_forward
- Hox1a most likely contributes to (blank) patterning in the developing embryo? Ventral, posterior, limb or anteriorarrow_forwardSelect all of the following that can help establish Hox gene expression boundaries (things that affect Hox and not things that Hox affects). Retinoic acid, anterior/posterior axis, fibroblast growth factors, vagal neural crest, and enhancersarrow_forwardEctopic expression of Hox often results in (blank) phenotypes. (Blank) transformations are characterized by the replacement of one body part/structure with another. Hoxeotic, homealoneotic, joexotic, or homeoticarrow_forward
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