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Answer the following question given this paragraph: CHAPTER SUMMARY 20.1 Organizing Life on Earth Scientists continually gain new information that helps understand the evolutionary history of life on Earth. Each group of organisms went through its own evolutionary journey, called its phylogeny. Each organism shares relatedness with others, and based on morphologic and genetic evidence, scientists attempt to map the evolutionary pathways of all life on Earth. Historically, organisms were organized into a taxonomic classification system. However, today many scientists build phylogenetic trees to illustrate evolutionary relationships. Q: Each group of organisms went through its own evolutionary journey, called what? Choices: - anomalous - zoology - superfamily - phylogeny A:
(Answer)
phylogeny

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Answer the following question given this paragraph: Figure 9.11 The ends of linear chromosomes are maintained by the action of the telomerase enzyme. Q: The ends of linear chromosomes are maintained by the action of which enzyme? Choices: - cytokine - pepsin - insulin - telomerase A:
(Answer)
telomerase

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Answer the following question given this paragraph: 43.5 | Human Pregnancy and Birth By the end of this section, you will be able to: Explain fetal development during the three trimesters of gestation Describe labor and delivery Compare the efficacy and duration of various types of contraception Discuss causes of infertility and the therapeutic options available Pregnancy begins with the fertilization of an egg and continues through to the birth of the individual. The length of time of gestation varies among animals, but is very similar among the great apes: human gestation is 266 days, while chimpanzee gestation is 237 days, a gorilla's is 257 days, and orangutan gestation is 260 days long. The fox has a 57-day gestation. Dogs and cats have similar gestations averaging 60 days. The longest gestation for a land mammal is an African elephant at 640 days. The longest gestations among marine mammals are the beluga and sperm whales at 460 days. Q: What land mammal has the longest gestation period? Choices: - Rhino - Giraffe - Asian elephant - african elephant A:
(Answer)
african elephant