References: [2:33] Di-Poï, Nicolas, et al. “Changes in Hox Genes' Structure and Function during the Evolution of the Squamate Body Plan.” Nature, vol. 464, no. 7285, 2010, pp. 99–103., doi:https://sci-hub.tw/10.1038/nature08789 [2:33] Woltering, Joost M., et al. “Axial Patterning in Snakes and Caecilians: Evidence for an Alternative Interpretation of the Hox Code.” Developmental Biology, vol. 332, no. 1, 2009, pp. 82–89., doi:https://sci-hub.tw/10.1016/j.ydbio.2009.04.031 [2:33] Peter, Isabelle S., and Eric H. Davidson. “Evolution of Gene Regulatory Networks Controlling Body Plan Development.” Cell, vol. 144, no. 6, 2011, pp. 970–985., doi:https://sci-hub.tw/10.1016/j.cell.2011.02.017 [3:56] O'donnell, Kathryn A., and Jef D. Boeke. “Mighty Piwis Defend the Germline against Genome Intruders.” Cell, vol. 129, no. 1, 2007, pp. 37–44., doi:https://sci-hub.tw/10.1016/j.cell.2007.03.028 [3:56] Malone, Colin D., and Gregory J. Hannon. “Small RNAs as Guardians of the Genome.” Cell, vol. 136, no. 4, 2009, pp. 656–668., doi:https://sci-hub.tw/10.1016/j.cell.2009.01.045 [5:11] Lynch, Vincent J, et al. “Transposon-Mediated Rewiring of Gene Regulatory Networks Contributed to the Evolution of Pregnancy in Mammals.” Nature Genetics, vol. 43, no. 11, 2011, pp. 1154–1159., doi:https://sci-hub.tw/10.1038/ng.917 [5:11] Kaneko-Ishino, Tomoko, and Fumitoshi Ishino. “The Evolution of the Placenta and Viviparity Is Related to LTR Retrotransposon-Derived Genes in Mammals.” Journal of Mammalian Ova Research, vol. 30, no. 1, 2013, pp. 16–23., doi:https://sci-hub.tw/10.1274/jmor.30.16 [5:11] Sugimoto, Jun, and Danny J. Schust. “Review: Human Endogenous Retroviruses and the Placenta.” Reproductive Sciences, vol. 16, no. 11, 2009, pp. 1023–1033., doi:https://sci-hub.tw/10.1177/1933719109336620 [6:46] Mable, B. K. “‘Why Polyploidy Is Rarer in Animals than in Plants’: Myths and Mechanisms.” Biological Journal of the Linnean Society, vol. 82, no. 4, 2004, pp. 453–466., doi:https://sci-hub.tw/10.1111/j.1095-8312.2004.00332.x [6:46] Beest, M. Te, et al. “The More the Better? The Role of Polyploidy in Facilitating Plant Invasions.” Annals of Botany, vol. 109, no. 1, 2011, pp. 19–45., doi:https://sci-hub.tw/10.1093/aob/mcr277 [6:46] Moghe, Gaurav D., and Shin-Han Shiu. “The Causes and Molecular Consequences of Polyploidy in Flowering Plants.” Annals of the New York Academy of Sciences, vol. 1320, no. 1, 2014, pp. 16–34., doi:https://sci-hub.tw/10.1111/nyas.12466